Molag Bal, God of Schemes

Indestructible
As long as there is less than 10 creatures in all graveyards Molag Bal is not a creature
At the beginning of each other players combat
phase you may pick one of their creatures
At the beginning of your combat phase gain
control of all creatures you chose they gain haste
At the beginning of your end step all players sacrifice all creatures they control but don't own