Underworld Breach + Malevolent Rumble + Maelstrom Wanderer + A Realm Reborn

Underworld Breach

Malevolent Rumble

Maelstrom Wanderer

A Realm Reborn

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 fascinating loop transforms Underworld Breach into an engine for endless recursion by leaning on its ability to give every nonland card in your graveyard escape. You cast Malevolent Rumble over and over from your graveyard, and each iteration fuels the next by dumping cards into your bin while spinning out an Eldrazi Spawn token. A Realm Reborn provides the color-fixing needed to convert the token's mana generation into the precise green requirement, letting you feed the loop indefinitely. Meanwhile, Maelstrom Wanderer sits on the board granting haste to the continuous stream of tokens or any other creatures you uncover along the way.