Derp Potato Grenade

Evolve (Whenever a creature enters the battlefield
under your control, if that creature has greater power
or toughness than this creature, put a +1/+1 counter
on this creature.)
{t}: Flip X coins, where X is Derp Potato
Grenade's power. Then Sacrifice Derp Potato
Grenade. If the coin flipped this way lands on
a card, put that card into its owner's graveyard.