The Elixir (Japanese: 特効薬Miracle Cure) is the best healing item in the Fire Emblem series, having first appeared in The Binding Blade and appearing in all but two games since (skipping Shadow Dragon and Echoes: Shadows of Valentia); in most of its appearances, it can recover all HP of any unit. It is highly expensive, but in most games it can be used up to three times. The Elixir can be seen as a continuation of the Thracia 776 iteration of the Vulnerary, which had the same effect.
In Fates, the Elixir is weaker than in other games: although still the best healing item in the game, it now restores only 40 HP and can only be used one time before disappearing from the inventory.
In Heroes, the Elixir is an item usable only in the Arena Assault mode, and is a powerful item capable of restoring a very large amount of HP to all of the player's units.
Available for selection after defeating 3, 5, or 7 consecutive teams including level 35 or higher enemies
Warriors
Event
Invisible Ties, clear Fort Siege Lv. 60 Space-Time Distortion with an S rank • The Path Is Yours, clear any of the following with a S rank: Ally Rescue Lv. 61 Space-Time Distortion, Ally Rescue Lv. 63 Space-Time Distortion • Noble Lady of Caelin, clear any of the following with an S rank: Shadow Elimination Lv. 34 Myrmidon, Arena Lv. 42 Myrmidon • Together to the End, clear any of the following with an S rank: Ally Rescue Lv. 50 Manakete, Shadow Elimination Lv. 50 Pegasus Knight • A Brush in the Teeth, clear Fort Defense Lv. 39 Archer with an S rank • Princess Minerva, clear Princess Minerva Lv. 85 Xander with an S rank • Knorda Market, clear Knorda Market Lv. 85 Validar with an S rank • Scion of Legend, clear Fort Siege Lv. 110 Space-Time Distortion with an S rank • Emmeryn, clear Arena Lv. 100 Mage with an S rank • Caravan Dancer, clear Caravan Dancer Lv. 105 Validar with an S rank