Darien, King of Kjeldor + Pandemonium + Platinum Angel

Darien, King of Kjeldor

Pandemonium

Platinum Angel

How it works

1. Cause a creature to enter the battlefield under your control.
2. Pandemonium triggers, dealing damage to you equal to the creature's power, with you being unable to lose the game due to Platinum Angel.
3. Darien triggers, creating a number of 1/1 Soldier creature tokens equal to the damage dealt to you.
4. When the Soldiers enter the battlefield, Pandemonium triggers that many times.
5. Resolve the first trigger, dealing 1 damage to you, with you being unable to lose the game due to Platinum Angel.
6. Repeat from step 3.

This clever loop starts the moment a creature enters the battlefield, letting Pandemonium deal damage to you that is safely ignored because Platinum Angel keeps you from losing the game. That self-inflicted damage is the catalyst for Darien, King of Kjeldor, who rewards your pain by spawning an army of 1/1 Soldier creature tokens. Those new arrivals immediately feed back into Pandemonium, creating a self-sustaining cascade that generates infinite creature tokens and infinite creature ETB triggers.