Sudden Panic is a three-tiered passive type B skill which debuted in Fire Emblem Heroes; the individual tiers of the skill are known as Sudden Panic 1, Sudden Panic 2, and Sudden Panic 3 in order from lowest to highest. Units with a Sudden Panic skill, at the start of its user's phase, may inflict a status effect turning bonuses into penalties on any enemy with a low enough HP in relation to its user's who is adjacent to another enemy (regardless if that enemy meets the HP threshold); the user's HP threshold required increases with the skill's tier.
At start of user's phase, inflicts a status effect turning bonuses on target into penalties through target's next action on enemy units whose HP is less than (user's HP - 5) and is adjacent to another enemy unit.
At start of user's phase, inflicts a status effect turning bonuses on target into penalties through target's next action on enemy units whose HP is less than (user's HP - 3) and is adjacent to another enemy unit.