Metapod

Defender, Reach
At the beginning of your upkeep, you may pay{1}{g}. As this resolves, sacrifice Metapod;
search your hand or library for a card named Butterfree and place it in the battlefield.
Shuffle your library afterwards.
A steel-hard shell protects its tender body. It quietly
endures hardships while awaiting evolution.
-Pokedex entry