Underworld Breach + Malevolent Rumble + Citanul Hierophants + Barbarian Class

Underworld Breach

Malevolent Rumble

Citanul Hierophants

Barbarian Class

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 clever loop centers around Underworld Breach, which gives every card in your graveyard the escape keyword, allowing you to recast Malevolent Rumble over and over by paying its mana cost and exiling fodder. Each time Malevolent Rumble resolves, it fills your graveyard while creating an Eldrazi Spawn token to help fund the next iteration. Meanwhile, Citanul Hierophants turns your entire army of tokens into mana producers alongside their natural ability to sacrifice for colorless mana, ensuring you always have the right mix of green and generic resources. Barbarian Class sits quietly on the board, though its dice-rolling modifications aren't even required to pull off this engine's devastating self-mill and storm count generation.