Squirtle, Resolute Protector

Evolution - This creature enters the battlefield with an experience counter on it. When this creature destroys another creature by combat, put an experience counter on this creature. Remove 3 experience counters from this creature; search your library for a card named Wartortle and Evolve it on top of this creature.

Defender

Energy Rain - When an Island enters the battlefield, this creature may attack as though it didn't have defender.