Power of Nihility

If number of allies adjacent to unit ≤ 1, grants Atk/Spd/Def/Res+9 to unit and grants Special cooldown charge +1 to unit per attack during combat (only highest value applied; does not stack), and also, if unit deals damage to foe using a Special during combat, restores X% of unit's max HP to unit (X = unit's max Special cooldown count value × 20, + 10; max 100; triggers even if 0 damage is dealt).