Butterfree

Flying, Toxic 1

{1}{p/b}{t}: Flip a coin. On heads, target creature deals damage to itself equal to its power. On tails, put a -1/-1 counter on that creature.

{1}{p/g}{t}: Flip a coin. On heads, add mana equal to the number of insect creatures you control in any combination of colors. On tails, search your library for a basic land and put it onto the battlefield tapped. Shuffle your library.