Zathuru, Hulking Necropolis

Partner with Zax, Nurosoll Hell Priest
Convoke, Delve
Devour 2 (As this creature enters the battlefield, you
may sacrifice any number of creatures, this creature
enters the battlefield with twice that many +1/+1
counters on it.)
At the beginning of your upkeep, put X 2/2 black Zombie creature tokens onto the battlefield, where
X is half the number of +1/+1 counters on
Zathuru, Hulking Necropolis, rounded down.