Spawnsire of Ulamog + Zirda, the Dawnwaker

Spawnsire of Ulamog

Zirda, the Dawnwaker

How it works

1. Activate Spawnsire of Ulamog by paying 2, creating two 0/1 Eldrazi Spawn creature tokens.
2. Activate both Eldrazi Spawn tokens by sacrificing them, adding CC.
3. Repeat.

This brilliant loop leverages Zirda, the Dawnwaker's cost-reduction ability to turn Spawnsire of Ulamog’s token-creation engine into a self-sustaining powerhouse. Normally, activating Spawnsire of Ulamog's first ability costs four mana, but Zirda, the Dawnwaker slashes that price down to just two mana. Because the resulting Eldrazi Spawn tokens can be sacrificed to produce two mana, you recoup the entire casting cost instantly, allowing you to repeat the process endlessly. This generates infinite enters-the-battlefield triggers, leaves-the-battlefield triggers, and sacrifices without ever running out of resources.