Meta-Serrcheron

This card is colorless but may only be played if at
least {b}{b}{b}{b}{b}{b}{b}{b}{b}{b}{b}{b}{b} was put into
mana pools so far this game.
Lose 4 Life: Return this creature to your hand.
{0}: Remove this creature from the game if it has attacked or defended at least three times so far
this game. You gain the emblem: "Creatures you
control are black, are +2/+2 and have Indestructible."