Fluffy, Immortal Unicorn

Flying, Indestructible. When Fluffy Enters Play:
Remove a Unicorn from Your graveyard From Play.
{w/b}{w/b}: Target Creature you Control Gains +1/+1
until end of turn.
{b},{t}: Create a 1/1 Black Undead Token.
{w}: Sacrifice an Undead Creature you Control:
Create a X/X White Unicorn Token with Flying
where X Equals the Sacrificed Creature's Power
and Toughness.