Underworld Breach + Malevolent Rumble + Mass Hysteria + Enduring Vitality

Underworld Breach

Malevolent Rumble

Mass Hysteria

Enduring Vitality

How it works

1. Cast Malevolent Rumble for its escape cost by paying 1 and exiling three other cards from your graveyard, causing you to mill at least three cards and create a 0/1 Eldrazi Spawn creature token.
2. Activate the Eldrazi Spawn by tapping it, adding .
3. Activate the Eldrazi Spawn by sacrificing it, adding C.
4. Repeat.

This looping engine starts with Underworld Breach, which grants your graveyard escape so you can cast Malevolent Rumble over and over again by exiling excess cards. Each iteration of Malevolent Rumble fills your graveyard while leaving behind an Eldrazi Spawn token. With Mass Hysteria granting your board haste, that token—alongside any creatures enhanced by Enduring Vitality—can immediately tap for mana to help pay for the next escape cycle, or sacrifice itself for colorless mana to fuel further spells.