Be'lakor, the Dark Master, Dread Slaver, Arcane Adaptation, and Archetype of Finality

Prerequisites

• Be'lakor, the Dark Master on the battlefield
• Dread Slaver in hand
• Arcane Adaptation on the battlefield
• Archetype of Finality on the battlefield
• "Demon" chosen with Arcane Adaptation
• available

Steps

1. Cast Dread Slaver by paying
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

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB