ButterblAWESOME!

When ButterblAWESOME! enters the battlefield, create a 1 / 1 black Butterfly Minion creature
token with flying.
At the beginning of each player's end step, create
a 1 / 1 black Butterfly Minion creature token with flying. You lose 1 life.
As long as there are no powered up creatures,
minion creatures you control gain lifelink.