As long as Spiritomb is your Active Pokémon, each player can't play any Trainer cards from his or her hand.
Attack: Darkness Grace
Search your deck for a card that evolves from 1 of your Pokémon and put it onto that Pokémon. (This counts as evolving that Pokémon.) If you do, put 1 damage counter on Spiritomb. Shuffle your deck afterward.