Mime Jr.

It mimics the expressions and motions of those it sees to understand the feelings of others.

Poke-POWER — Baby Evolution: Once during your turn (before your attack), you may put Mr. Mime from your hand onto Mime Jr. (this counts as evolving Mime Jr.) and remove all damage counters from Mime Jr.

Encore: Choose 1 of the Defending Pokémon's attacks. That Pokémon can use only that attack during your opponent's next turn.