Rare Candy.

Choose 1 of your Basic Pokémon in play. If you have a Stage 1 or Stage 2 card that evolves from that Pokémon in your hand, put that card on the Basic Pokémon. (This counts as evolving that Pokémon.) (If you choose a Stage 2 Pokémon in your hand, put that Pokémon on the Basic Pokémon instead of on a Stage 1 Pokémon.)