Underworld Breach + Malevolent Rumble + Temur Ascendancy + Insidious Roots

Underworld Breach

Malevolent Rumble

Temur Ascendancy

Insidious Roots

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 self-sustaining loop relies on Underworld Breach to let you repeatedly cast Malevolent Rumble from your graveyard by exiling your other resources as fuel. While Malevolent Rumble fills your graveyard with more fodder and creates a token, Insidious Roots triggers whenever those cards leave the graveyard, churning out Plant tokens that can tap for mana alongside the Eldrazi Spawns. Meanwhile, Temur Ascendancy grants your creatures haste and capitalizes on your token creation, letting you draw cards whenever a creature with power 4 or greater enters.