Aether Raids

Aether Raids (Japanese: 飛空城 Flying Sky Castle) is a game mode in Fire Emblem Heroes, introduced to the game on November 9, 2018. During Aether Raids events, players can create Aether Keeps with certain structures to attack and defend with certain teams to increase their lift.

Plot

Main article: Aether Raids/Script

As Anna stares at an Aether Keep in shock, Alfonse explains that the abandoned keep was first occupied by the first King of Askr, Líf. Anna is unsure on where the exact source of the information given to them came from, but Sharena rushes to Anna and Alfonse asking them what the destroyed object was used for. Alfonse looks in the partially burned down library and then explaining to Sharena that Askrans would once come to do battle high in the skies seeking power as a single goal, while using various offensive and defensive weapons. Sharena is excited to hear about the keep's weaponry and asks if there are any more around. Anna states that it will be looked at later as they explore the Aether Keep.

Gameplay

Aether Keep

Players can edit an Aether Keep (Japanese: 飛空城 Flying Sky Castle) and freely test their defensive map's structures without consuming Aether. Aether Keeps are split into two maps, the Defense Map for defending your keep and the Offense Map for attacking an opponents keep.

Battling

Players may use a resource named Aether (Japanese: エナジー Energy) that acts as stamina to participate in Aether Raids which restores a certain amount once each day and fully during the start of a new season. For every first battle each day, the Aether cost is 0, and the total cost of Aether to battle increases as your lift is raised higher.

Lift and Tiers

Your current tier is based upon your Lift which changes based on your attack and defense results. Using bonus characters in your team grants you +20 bonus to your Lift, but only one bonus character with the highest value is counted. If you lose the battle while attacking an opponent's Aether Keep, you'll acquire less Lift. Once you achieve tier 11, you will be able to unlock a 5th slot in your offensive teams for 300 Aether Stones. Furthermore, you can spend another 300 Aether Stones for a 5th slot in your defensive team. You can unlock a 6th slot for offensive teams on tier 19, once again for 300 Aether Stones.

Structures

Structures can be placed on any map to defend an Aether Keep or decorate, but some cannot be removed and/or destroyed. Other structures are available for a limited time, but the required items can be obtained during that time. Up to five structures (including the fort) can be carried when attacking an opponents Aether Keep.

Defense

These structures are used to help defenders of an Aether Keep.

List of Defensive structures
Image	Structure	Type	Level	Cost	Description	n
	Fortress (D)		1	0	If structure's level > opponent's Fortress (O) level, grants Atk/Spd/Def/Res+X to all allies. (X = difference in level × 4). Note: Cannot be removed or destroyed.	--
			2	500
			3	1,000
			4	1,500
			5	2,000
	Bolt Tower (D)		1	100	At the start of turn 3, deals n damage to foes within 7 rows and 3 columns centered on structure.	10
			2	300		15
			3	500		20
			4	700		25
			5	900		30
			6	1,500		35
			7	2,000		40
			8	3,000		45
			9	5,000		50
			10	7,000		52
			11	10,000		54
	Tactics Room (D)		1	100	At start of turn, if any foes are within 7 rows and 3 columns centered on structure and their HP ≤ n and they use bow, dagger, magic, or staff, restricts those foes' movement to 1 space through their next actions.	40
			2	300		45
			3	500		50
			4	700		55
			5	900		60
			6	1,500		65
			7	2,000		70
			8	3,000		75
			9	5,000		80
			10	7,000		82
			11	10,000		84
			12	12,000		86
	Healing Tower (D)		1	100	At start of turn, restores n HP to allies within 3 rows and 5 columns centered on structure.	10
			2	300		15
			3	500		20
			4	700		25
			5	900		30
			6	1,500		35
			7	2,000		40
			8	3,000		45
			9	5,000		50
			10	7,000		52
			11	10,000		54
			12	12,000		56
	Panic Manor (D)		1	100	At start of turn, if any foes are within 7 rows and 3 columns centered on structure and their HP ≤ n, converts bonuses on those foes into penalties through their next actions.	40
			2	300		45
			3	500		50
			4	700		55
			5	900		60
			6	1,500		65
			7	2,000		70
			8	3,000		75
			9	5,000		80
			10	7,000		82
			11	10,000		84
			12	12,000		86
	Catapult (D)		1	100	At start of turn, destroys offensive structures within the same column as this structure if their level ≤ this structure's level. Note: Fortress (O) cannot be destroyed.	--
			2	300
			3	500
			4	700
			5	900
			6	1,500
			7	2,000
			8	3,000
			9	5,000
			10	7,000
			11	10,000
			12	12,000
	Infantry School (D)		1	50	At start of turn, inflicts Atk/Spd/Def/Res-n on infantry foes within 3 columns centered on structure through their next actions. Note: Only one school can be placed at a time.	2
			2	150		3
			3	250		4
			4	350		5
			5	450		6
			6	750		7
			7	1,000		8
			8	1,500		9
			9	2,500		10
			10	3,500		11
			11	5,000		12
			12	6,000		13
	Armor School (D)		1	50	At start of turn, inflicts Atk/Spd/Def/Res-n on armored foes within 3 columns centered on structure through their next actions. Note: Only one school can be placed at a time.	2
			2	150		3
			3	250		4
			4	350		5
			5	450		6
			6	750		7
			7	1,000		8
			8	1,500		9
			9	2,500		10
			10	3,500		11
			11	5,000		12
			12	6,000		13
	Cavalry School (D)		1	50	At start of turn, inflicts Atk/Spd/Def/Res-n on cavalry foes within 3 columns centered on structure through their next actions. Note: Only one school can be placed at a time.	2
			2	150		3
			3	250		4
			4	350		5
			5	450		6
			6	750		7
			7	1,000		8
			8	1,500		9
			9	2,500		10
			10	3,500		11
			11	5,000		12
			12	6,000		13
	Flier School (D)		1	50	At start of turn, inflicts Atk/Spd/Def/Res-n on flying foes within 3 columns centered on structure through their next actions. Note: Only one school can be placed at a time.	2
			2	150		3
			3	250		4
			4	350		5
			5	450		6
			6	750		7
			7	1,000		8
			8	1,500		9
			9	2,500		10
			10	3,500		11
			11	5,000		12
			12	6,000		13
	Bright Shrine (D)		1	100	At start of turn, inflicts Atk/Spd-n on foe on the enemy team with the highest Atk+Spd total through its next action.	2
			2	300		3
			3	500		4
			4	700		5
			5	900		6
			6	1,500		7
			7	2,000		8
			8	3,000		9
			9	5,000		10
			10	7,000		11
			11	10,000		12
	Dark Shrine (D)		1	100	At start of turn, inflicts Def/Res-n on foe on the enemy team with the highest Def+Res total through its next action.	2
			2	300		3
			3	500		4
			4	700		5
			5	900		6
			6	1,500		7
			7	2,000		8
			8	3,000		9
			9	5,000		10
			10	7,000		11
			11	10,000		12
	Duo's Hindrance		1	100	If a Duo or Harmonized Hero is on the defensive team, foe cannot use Duo or Harmonized Skills between turn 1 and turn n.	3
			2	300		4
			3	500		5
			4	700		6
			5	900		7

Offense

These structures are used to help attackers of an Aether Keep.

List of Offensive structures
Image	Structure	Type	Level	Cost	Description	n
	Fortress (O)		2	500	If structure's level > opponent's Fortress (D) level, grants Atk/Spd/Def/Res+X to all allies. (X = difference in level × 4). Note: Cannot be removed or destroyed.	--
			3	1,000
			4	1,500
			5	2,000
	Bolt Tower (O)		1	100	At the start of turn 3, deals n damage to foes within 3 columns centered on structure.	10
			2	300		15
			3	500		20
			4	700		25
			5	900		30
			6	1,500		35
			7	2,000		40
			8	3,000		45
			9	5,000		50
			10	7,000		52
			11	10,000		54
	Tactics Room (O)		1	100	At start of turn, if any foes are within the same column as structure and their HP ≤ n and they use bow, dagger, magic, or staff, restricts those foes' movement to 1 space through their next actions.	40
			2	300		45
			3	500		50
			4	700		55
			5	900		60
			6	1,500		65
			7	2,000		70
			8	3,000		75
			9	5,000		80
			10	7,000		82
			11	10,000		84
			12	12,000		86
	Healing Tower (O)		1	100	At start of turn, restores n HP to allies within 3 rows and 5 columns centered on structure.	10
			2	300		15
			3	500		20
			4	700		25
			5	900		30
			6	1,500		35
			7	2,000		40
			8	3,000		45
			9	5,000		50
			10	7,000		52
			11	10,000		54
			12	12,000		56
	Panic Manor (O)		1	100	At start of turn, if any foes are within 3 columns centered on structure and their HP ≤ n, converts bonuses on those foes into penalties through their next actions.	40
			2	300		45
			3	500		50
			4	700		55
			5	900		60
			6	1,500		65
			7	2,000		70
			8	3,000		75
			9	5,000		80
			10	7,000		82
			11	10,000		84
			12	12,000		86
	Catapult (O)		1	100	At start of turn, destroys defensive structures within the same column as this structure if their level ≤ this structure's level. Note: Fortress (D), traps, resources, and ornaments cannot be destroyed.	--
			2	300
			3	500
			4	700
			5	900
			6	1,500
			7	2,000
			8	3,000
			9	5,000
			10	7,000
			11	10,000
			12	12,000
	Infantry School (O)		1	50	At start of turn, inflicts Atk/Spd/Def/Res-n on infantry foes within 3 columns centered on structure through their next actions. Note: Only one school can be placed at a time.	2
			2	150		3
			3	250		4
			4	350		5
			5	450		6
			6	750		7
			7	1,000		8
			8	1,500		9
			9	2,500		10
			10	3,500		11
			11	5,000		12
			12	6,000		13
	Armor School (O)		1	50	At start of turn, inflicts Atk/Spd/Def/Res-n on armored foes within 3 columns centered on structure through their next actions. Note: Only one school can be placed at a time.	2
			2	150		3
			3	250		4
			4	350		5
			5	450		6
			6	750		7
			7	1,000		8
			8	1,500		9
			9	2,500		10
			10	3,500		11
			11	5,000		12
			12	6,000		13
	Cavalry School (O)		1	50	At start of turn, inflicts Atk/Spd/Def/Res-n on cavalry foes within 3 columns centered on structure through their next actions. Note: Only one school can be placed at a time.	2
			2	150		3
			3	250		4
			4	350		5
			5	450		6
			6	750		7
			7	1,000		8
			8	1,500		9
			9	2,500		10
			10	3,500		11
			11	5,000		12
			12	6,000		13
	Flier School (O)		1	50	At start of turn, inflicts Atk/Spd/Def/Res-n on flying foes within 3 columns centered on structure through their next actions. Note: Only one school can be placed at a time.	2
			2	150		3
			3	250		4
			4	350		5
			5	450		6
			6	750		7
			7	1,000		8
			8	1,500		9
			9	2,500		10
			10	3,500		11
			11	5,000		12
			12	6,000		13
	Escape Ladder (O)		1	100	A lost battle's Aether cost will be returned. May be used up to n times per season. Note: Cannot be destroyed. Triggers only if a battle comes to its end and results in a loss.	1
			2	300		2
			3	500		3
			4	700		4
			5	900		5
			6	1,500		6
			7	2,000		7
	Bright Shrine (O)		1	100	At start of turn, inflicts Atk/Spd-n on foe on the enemy team with the highest Atk+Spd total through its next action.	2
			2	300		3
			3	500		4
			4	700		5
			5	900		6
			6	1,500		7
			7	2,000		8
			8	3,000		9
			9	5,000		10
			10	7,000		11
			11	10,000		12
	Dark Shrine (O)		1	100	At start of turn, inflicts Def/Res-n on foe on the enemy team with the highest Def+Res total through its next action.	2
			2	300		3
			3	500		4
			4	700		5
			5	900		6
			6	1,500		7
			7	2,000		8
			8	3,000		9
			9	5,000		10
			10	7,000		11
			11	10,000		12
	Duo's Indulgence		1	100	The first Duo or Harmonized Skill used between turn 1 and turn n can be used a second time. (Max of two uses. Only one use per turn.)	3
			2	300		4
			3	500		5
			4	700		6
			5	900		7
	Safety Fence (O)		1	500	Until turn 1, after skill activation at start of defensive turn, if raiding party is outside the defensive team's range or is within 2 rows and 7 columns centered on structure, defensive turn ends immediately.	--

Traps

These traps trigger when an a foe ends movement on one.

List of Traps
Image	Structure	Type	Level	Cost	Description	n
	Bolt Trap		1	0	If foe ends movement on this structure's space, deals n damage to target and units within 3 spaces. (Cancels foe's attack or Assist skill.)	10
			2	100		20
			3	300		30
			4	500		40
			5	700		50
	Heavy Trap		1	0	If foe ends movement on this structure's space, restricts movement of target and units within 2 spaces with HP ≤ n to 1 space through their next actions. (Cancels foe's attack and Assist skills.)	40
			2	100		45
			3	300		50
			4	500		55
			5	700		60
	Hex Trap		1	0	If foe ends movement on this structure's space and foe's HP ≤ n, cancels the foe's attack, Assist skill, etc. and ends that foe's action. (Magic traps cannot be disarmed by Disarm Trap skills.)	40
			2	100		45
			3	300		50
			4	500		55
			5	700		60
			6	1,500		65

Decoy Traps

List of Decoy traps
Image	Structure	Type	Cost	Description
	False Bolt Trap		0	This looks like a Bolt Trap, but it's just a fake.
	False Heavy Trap		0	This looks like a Heavy Trap, but it's just a fake.
	False Heavy Trap		0	This looks like a Hex Trap, but it's just a fake.

Resources

These structures store/restore Aether and can be restored to the attacker whenever one is destroyed (if the attacker wins).

Image	Structure	Type	Level	Cost	Description	n
	Aether Fountain		1	0	Restores n Aether to the Aether Keep each day. If destroyed in an attack, it restores Aether to the raiding party (if they win). Note: Cannot be removed. Can be destroyed.	50
			2	100		60
			3	300		70
	Aether Amphorae		1	0	Stores up to n Aether. If destroyed in an attack, it restores Aether to the raiding party (if they win). Note: Cannot be removed. Can be destroyed.	100
			2	100		150
			3	300		200
			4	500		250

Ornaments

These structures have no combat effects and are solely for decorating an Aether Keep.

Image	Structure	Type	Cost	Description
	Golden Throne		0	A throne suitable only for those who have achieved a rank from 1 to 3000 in Aether Raids. From the second time onward, the number of times this feat has been achieved will be inscribed upon it.
	Silver Throne		0	A throne suitable only for those who have achieved a rank from 1 to 6000 in Aether Raids. From the second time onward, the number of times this feat has been achieved will be inscribed upon it.
	Bronze Throne		0	A throne suitable only for those who have achieved a rank from 1 to 10000 in Aether Raids. From the second time onward, the number of times this feat has been achieved will be inscribed upon it.
	Feh Statue		500*	An objet d'art produced under the direct supervision of its model. It's an event item.
	Flower Bed		500*	An arrangement of flowers in vivid colors. It's an event item.
	Street Lamp		500*	A lamp in an elegant, classic design. It's an event item.
	Feh Kagami Mochi		500*	Not the real Feh! It's a decoration that brings good luck for the New Year. It's an event item.
	Snow Family		500*	It seems they're brother and sister. It's an event item.
	Fireplace		500*	If it's cold where you are, this item should help you feel a little bit warmer. It's an event item.
File:Is feh anniversary cake.png	Anniversary Cake		500*	A massive cake baked to celebrate the second anniversary. It's an event item.
File:Is feh anniversary arch.png	Anniversary Arch		500*	An arch built to welcome well-wishers during the second anniversary. It's an event item.
File:Is feh heart garland.png	Heart Garland		500*	A decoration that symbolizes overflowing love. It's an event item.
File:Is feh iron fence.png	Iron Fence		500*	Used to separate what's inside from what's outside. It's an event item.
File:Is feh foreboding lizard.png	Foreboding Lizard		500*	This statue creates an atmosphere of menace, but the candles lighten the mood. It's an event item.
File:Is feh lending library.png	Lending Library		500*	All of the Heroes who cherish knowledge gathered up this collection of books. It's an event item.
File:Is feh sight of bonding.png	Sight of Bonding		500*	A floral decoration commemorating the eternal connection of friendship. It's an event item.
File:Is feh sound of bonding.png	Sound of Bonding		500*	If two people who share a wish ring it together, their wish will come true. It's an event item.
File:Is feh word of bonding.png	Word of Bonding		500*	For Heroes who like to deepen their bonds over tea or at gatherings. It's an event item.
File:Is feh black eagle flag.png	Black Eagle Flag		500*	Flag for the class led by Edelgard. It's an event item.
File:Is feh blue lion flag.png	Blue Lion Flag		500*	Flag for the class led by Dimitri. It's an event item.
File:Is feh golden deer flag.png	Golden Deer Flag		500*	Flag for the class led by Claude. It's an event item.
File:Is feh witch's cauldron.png	Witch's Cauldron		500*	A cauldron bubbling away, full of unidentifiable ingredients. Looks disgusting, but the smell is somehow alluring. It's an event item.
File:Is feh pumpkin lanterns.png	Pumpkin Lanterns		500*	Expertly carved pumpkins. They're brothers from the same patch. The eldest is the base, and the youngest is on top. It's an event item.
File:Is feh haunted coffin.png	Haunted Coffin		500*	Even though it appears empty, a sinister aura emanates from within. It's an event item.
File:Is feh year's entry decor.png	Year's Entry Decor		500*	A decoration said to be placed in the entryway of Hoshidan homes as a way of celebrating the new year. It's an event item.
File:Is feh red wood lantern.png	Red Wood Lantern		500*	A lantern made of wood in the style of those seen across Hoshido. The red color is said to protect from catastrophes. It's an event item.
File:Is feh year's festive gate.png	Year's Festive Gate		500*	A red gate in the style said to be seen across Hoshido, decorated with New Year's trappings to celebrate coming change. It's an event item.
File:Is feh anniversary treat.png	Anniversary Treat		500*	A gigantic cupcake whipped up to celebrate the third anniversary. It's an event item.
File:Is feh mirror of niðavellir.png	Mirror of Niðavellir		500*	A mirror of hidden power that hangs above the throne of Niðavellir—or rather, an imitation modeled after the real thing. It's an event item.
File:Is feh gullinbursti figure.png	Gullinbursti Figure		500*	A commemorative figure built to put dvergr craftsmanship on display, its design meant to aid in combating larger foes. It's an event item.
File:Is feh seiðjárn gearwork.png	Seiðjárn Gearwork		500*	Structure common to Niðavellir, its mechanism driven by magic. It's an event item.
File:Is feh anniversary cake 4.png	Anniversary Cake		500*	A massive cake baked to celebrate the fourth anniversary. It's an event item.
File:Is feh feh sand statue.png	Feh Sand Statue		500*	It seems Feh has reviewed this sand sculpture herself—and she was satisfied with the result! It's an event item.
File:Is feh ash statue.png	Ash Statue		500*	A statue of Askr's retainer in the form of a divine beast. It radiates a certain charm felt by all who lay eyes on it.
File:Is feh elm statue.png	Elm Statue		500*	A statue of Embla's retainer in the form of a divine beast. It evokes a tingling unease, its wings spread wide.
File:Is feh flag of embla.png	Flag of Embla		500*	The flag of Veronica's homeland, the Emblian Empire.
File:Is feh anniversary cake 5.png	Anniversary Cake		500*	A massive cake baked to celebrate the fifth anniversary. It's an event item.
File:Is feh summerning stone.png	Summerning Stone		500*	A faux summoning stone that radiates with a summery, watermelon aura—but it can't summon any Heroes. It's an event item.
File:Is feh icon of light.png	Icon of Light		500*	A statue of a goddess from Vanaheimr, the realm of light. It radiates a hopeful aura. It's an event item.
File:Is feh light-realm flora.png	Light-Realm Flora		500*	Plant life from Vanaheimr, the realm of light. Its brilliance is soothing. It's an event item.
File:Is feh serpent's curse.png	Serpent's Curse		500*	A statue of a snake wrapped around a golden crystal. The ethereal light is unsettling. It's an event item.
File:Is feh anniversary cakes.png	Anniversary Cakes		500*	A lavish tea set put together to celebrate the sixth anniversary. It's an event item.
File:Is feh sea-foam feh.png	Sea-Foam Feh		500*	A statue of Feh atop a seashell that radiates a summery aura. It depicts Feh rising from the sea and exudes a sense of love and beauty.
File:Is feh tree-hand statue.png	Tree-Hand Statue		500*	A statue of a denizen of Yggdrasill, the realm of the World-Tree. You feel its healing power wash over you when nearby. It's an event item.
File:Is feh world-tree gate.png	World-Tree Gate		500*	Gate of Yggdrasill, realm of the World-Tree. The silence that surrounds the mystical tree calms the heart. It's an event item.
File:Is feh wanted poster.png	Wanted Poster		500*	A wanted poster from Yggdrasill, realm of the World-Tree. Who put it up, and why? It's an event item.
File:Is feh anniversary cake 7.png	Anniversary Cake		500*	A massive cake baked to celebrate the seventh anniversary. It's an event item.

Terrain

Players can change the terrain of an Aether Keep, though some terrains require Aether Stone to unlock.

Rewards

Rank

Score	Reward
1–1,000	1 + 1 + 1 + 50 + 44 + 35
1,001–3,000	1 + 1 + 1 + 40 + 42 + 30
3,001–6,000	1 + 1 + 36 + 40 + 25
6,001–10,000	1 + 32 + 38 + 22
10,001–20,000	28 + 36 + 17
20,001–30,000	24 + 32 + 15
30,001–50,000	20 + 28 + 14
50,001–70,000	18 + 26 + 13
70,001–100,000	16 + 24 + 12
100,000–300,000	14 + 22 + 11
300,001+	12 + 20 + 10

AR Tier

AR Tier	Lift	Reward
1	0–399	20 + 10 + 10
2	400–799	20 + 20 + 10
3	800–1,199	20 + 30 + 10
4	1,200–1,599	20 + 40 + 10
5	1,600–1,999	20 + 50 + 10
6	2,000–2,399	24 + 60 + 10
7	2,400–2,799	24 + 70 + 12
8	2,800–3,199	24 + 80 + 14
9	3,200–3,599	24 + 90 + 16
10	3,600–3,999	24 + 100 + 18
11	4,000–4,399	28 + 110 + 20 (Fifth ally 300)
12	4,400–5,199	28 + 120 + 22
13	4,800–5,199	28 + 130 + 24
14	5,200–5,999	28 + 140 + 26
15	5,600–5,999	28 + 150 + 28
16	6,000–6,499	32 + 160 + 30
17	6,500–7,199	32 + 170 + 32
18	7,200–8,199	32 + 180 + 34
19	8,200–9,399	32 + 190 + 36 (Sixth ally 300)
20	9,400–10,999	32 + 200 + 38
21	11,000–11,399	34 + 210 + 40
22	11,400–11,799	35 + 215 + 41
23	11,800–12,199	36 + 220 + 42
24	12,200–12,599	37 + 225 + 43
25	12,600–12,999	38 + 230 + 44
26	13,000–13,399	39 + 235 + 45
27	13,400–13,799	40 + 240 + 46
28	13,800–15,999	45 + 250 + 50
29	16,000–16,399	45 + 250 + 50
30	16,400–17,999	45 + 250 + 50
31	18,000–18,399	46 + 250 + 51
32	18,400–18,799	47 + 250 + 52
33	18,800–19,199	48 + 250 + 53
34	19,200–19,599	49 + 250 + 54
35	19,600–19,999	50 + 250 + 55
36	20,000–20,399	51 + 250 + 56
37	20,400–20,799	52 + 250 + 57
36	20,800–20,999	53 + 250 + 58
37	21,000+	55 + 250 + 60

Etymology and other languages

Names, etymology, and in other regions
Language	Name	Definition, etymology, and notes
English	Aether Raids	--
Japanese	飛空城	Flying Sky Castle
Spanish	Asaltos etéreos	Aether Assault
French	Raid céleste	Celestial Raid
German	Ätherraubzüge	Aether Raids
Italian	Blitz eteri	Aether Raids
Portuguese (Brazil)	Investidas etéreas	Ethereal assaults
Traditional Chinese	飛空城	Flying Sky Castle

Gallery

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  Background of Tropos

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  Background of Stratos

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  Background of Mesos

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  Background of Thermos

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  Background of Exos

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  Background of Ásgarðr

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  Background during Chaos season