Be'lakor, the Dark Master + Dread Slaver + Arcane Adaptation + Zagras, Thief of Heartbeats

Be'lakor, the Dark Master

Dread Slaver

Arcane Adaptation

Zagras, Thief of Heartbeats

How it works

1. Cast Dread Slaver by paying 3.
2. When Dread Slaver enters the battlefield, Be'lakor's second ability triggers, causing Dread Slaver to deal damage equal to its power to itself.
3. Dread Slaver dies as a state-based action due to its deathtouch.
4. Dread Slaver triggers, returning itself from your graveyard to the battlefield.
5. Repeat from step 2.