Unown [M] (N2 #49)

Pokemon Power • [Metal]

Whenever a Metal Pokémon damages 1 of your Pokémon, reduce that damage by 30 (after applying Weakness and Resistance). This power stops working if you have more than 1 Unown [M] in play. (This power works even if Unown [M] is Asleep, Confused, or Paralyzed.)