Underworld Breach + Malevolent Rumble + Urabrask the Hidden + Enduring Vitality

Underworld Breach

Malevolent Rumble

Urabrask the Hidden

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 loop turns your graveyard into an engine of endless iteration by using Underworld Breach to let you repeatedly cast Malevolent Rumble from the graveyard for its escape cost, filling your bin right back up with new fodder. While the spell itself is fueling your resources and leaving behind Eldrazi Spawn tokens, Urabrask the Hidden ensures those tokens and any other creatures enter the battlefield with haste so they aren't caught sleeping. Meanwhile, Enduring Vitality gives your creatures the ability to tap for mana alongside the token's sacrifice ability, helping you generate the exact mana needed to keep the escape cycle spinning.