Koll, the Forgemaster + Demonmail Hauberk + Kobolds of Kher Keep + Shield Sphere

Koll, the Forgemaster

Demonmail Hauberk

Kobolds of Kher Keep

Shield Sphere

How it works

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

This clever loop turns the zero-cost castings of Kobolds of Kher Keep and Shield Sphere into a perpetual sacrifice engine fueled by Demonmail Hauberk. Whenever you sacrifice one of these tiny creatures to pay the Hauberk's equip cost, Koll, the Forgemaster's static triggered ability notices it was equipped and immediately bounces it right back to your hand. By alternating which creature takes the equipment and which one goes to the graveyard, you create a seamless loop that endlessly recycles both permanents for boundless sacrifices and storm count.