Ash Ketchum & Pikachu

As long as Ash Ketchum is on the battlefield,
Pikachu gains +1/+1 for each other Pokémon you control.
Pokémon Trainer: tap : Search your library for a
Pokémon card, reveal it, and put it into your hand. Shuffle your library afterward.
Battle Bond: Whenever a Pokémon you control defeats an
opponent's creature in combat,
put a +1/+1 counter on Ash Ketchum & Pikachu.