Tower Winder + Kheru Goldkeeper + Six + Command Tower + Yahenni, Undying Partisan

Tower Winder

Kheru Goldkeeper

Six

Command Tower

Yahenni, Undying Partisan

How it works

1. Cast Tower Winder from your graveyard by paying 1 and discarding Command Tower
2. Kheru Goldkeeper triggers, creating a Treasure token.
3. When Tower Winder enters, it triggers, returning Command Tower from your graveyard to your hand.
4. Kheru Goldkeeper triggers, creating a Treasure token.
5. Activate Yahenni by sacrificing Tower Winder.
6. Activate two Treasures by tapping and sacrificing them, adding 1.
7. Repeat.

This looping engine turns a steady stream of land drops into an endless mechanical symphony, powered by Six granting retrace to nonland permanents in your graveyard. By discarding Command Tower to recast Tower Winder from your graveyard, you continually trigger Kheru Goldkeeper to generate Treasure tokens whenever cards leave your graveyard. Those treasures are then sacrificed alongside the creature itself to fuel Yahenni, Undying Partisan, while Tower Winder's entry ability conveniently fishes Command Tower right back to your hand to keep the cycle going.