Propagator Drone + Earthcraft + Anointed Procession

Propagator Drone

Earthcraft

Anointed Procession

How it works

1. Activate a basic Forest by tapping it, adding .
2. Activate Propagator Drone by paying 3, creating two 0/1 Eldrazi Spawn creature tokens.
3. Activate Earthcraft by tapping an Eldrazi Spawn, untapping a basic Forest.
4. Activate the basic Forest by tapping it, adding .
5. Activate Earthcraft by tapping an Eldrazi Spawn, untapping the basic Forest.
6. Activate the Eldrazi Spawns by sacrificing them, adding CC.
7. Repeat.

This engine relies on Propagator Drone's ability to churn out Eldrazi Spawn creature tokens, supercharged by Anointed Procession doubling every single one that enters the battlefield. Earthcraft serves as the crucial bridge by letting you immediately tap those newly minted tokens to untap your basic lands, fueling the mana required to keep the loop going. With your lands cleared for reuse and the ability to sacrifice the tokens for colorless mana, you achieve an endless cascade of entries, leaves, and sacrifices.