Necroform Sovereign

Level up {b} ({b}: Put a level counter on this.
Level up only as a sorcery.) [3/3]
LEVEL 5-9 Trample, deathtouch [4/4]
Trample, deathtouch
Whenever Necroform
LEVEL 10+ Sovereign deals combat [4/4]
damage to a player, that
player loses the game.