Koll, the Forgemaster + Demonmail Hauberk + Crookshank Kobolds + Shield Sphere

Koll, the Forgemaster

Demonmail Hauberk

Crookshank Kobolds

Shield Sphere

How it works

1. Activate Demonmail Hauberk's equip ability by sacrificing Crookshank Kobolds, targeting Shield Sphere.
2. When Crookshank Kobolds dies, Koll triggers, returning Crookshank Kobolds from your graveyard to your hand.
3. Resolve the Demonmail Hauberk ability, attaching it to Shield Sphere.
4. Cast Crookshank Kobolds by paying 0.
5. Activate Demonmail Hauberk's equip ability by sacrificing Shield Sphere, targeting Crookshank Kobolds.
6. When Shield Sphere dies, Koll triggers, returning Shield Sphere from your graveyard to your hand.
7. Resolve the Demonmail Hauberk ability, attaching it to Crookshank Kobolds.
8. Cast Shield Sphere by paying 0.
9. Repeat.

This cunning loop relies on the zero-mana cost of Crookshank Kobolds and Shield Sphere to constantly feed the altar of Demonmail Hauberk. As you sacrifice one free creature to equip the heavy armor, Koll, the Forgemaster's static ability watches the victim leave this world equipped, immediately bouncing it right back to your hand for another zero-mana replay. By alternating who carries the mail and who hits the graveyard, you create a perpetual motion machine that generates infinite deaths, storm count, and entry triggers.