Underworld Breach + Malevolent Rumble + Fervor + Citanul Hierophants

Underworld Breach

Malevolent Rumble

Fervor

Citanul Hierophants

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 ingenious loop revolves around Underworld Breach giving your graveyard the power of escape, turning Malevolent Rumble into a recurring engine that refills your graveyard while flooding the board with Eldrazi Spawn. Because Fervor grants your newly created tokens haste, they don't have to wait around to be useful. Instead, Citanul Hierophants lets you immediately tap those same tokens for mana, which combines with their own sacrifice ability to generate the exact resources needed to pay Malevolent Rumble's escape cost over and over again.