Skeletron

Flying
When Skeletron enters the battlefield, create 2
2/2 black Skeleton Hand creature tokens. They
have "When this creature dies, put a +1/+1
counter on Skeletron"
Enrage - Sacrifice a Skeleton Hand
"The disembodied bones of a former tyrant pulsed with
a hatred so strong, it left behind a mighty curse which guards the dungeon."