Boosts the Pokémon's Sp. Atk stat when it takes a hit that causes its HP to drop to half or less.
Restores 30 HP in Generation III . Restores ¼ of maximum HP from Generation IV onwards.
Raises the power of Dark-type moves. Note: Formatted as BlackGlasses prior to Generation VI .
Heals a little HP at the end of each turn.
Raises user's Speed , but they can only use one move.
Prevents a one-hit knockout.