Survival Instinct is the Personal Ability of Shamir in Fire Emblem: Three Houses. It temporarily boosts the unit's stats if they defeat an enemy on their phase. This is similar to another skill, Bloodthirst, personally acquired by Peri from [[Fire Emblem Fates|Fates.
|If unit initiates combat and defeats the target||--|
|Effects||Grants +4 strength, +4 magic, +4 dexterity, and +4 speed to unit for one turn when activated.|
|Users||Personal ability of Shamir.|