Underworld Breach + Malevolent Rumble + Cryptolith Rite + Thousand-Year Elixir

Underworld Breach

Malevolent Rumble

Cryptolith Rite

Thousand-Year Elixir

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 relies on Underworld Breach to let you cast Malevolent Rumble directly from your graveyard over and over, fueling its own escape costs by continuously dumping cards into your graveyard. Cryptolith Rite and Thousand-Year Elixir are the grease in the engine, working together to let the Eldrazi Spawn tokens you create tap for mana immediately and untap to keep the chain going. By cycling Malevolent Rumble through the graveyard, you sacrifice the tokens for colorless mana and tap them for colored mana via Cryptolith Rite's passive ability, generating infinite self-mill, death triggers, and storm count.