Luccifer , Vanishing Divider

Flying, vigilance, shroud
Creatures you control gain lifelink.
This creature power equal to the no. of -1/-1 counter on the battlefield.
When this card enter battlefield, target 2 creature you don't control get
-1/-1 counter.
{p/b}{p/b}{p/w}{p/w}{p/g}{p/g}: all creatures get -1/-1 counters.
Transform this card, activate this ability when there are 10 or more creature in graveyard.