Koll, the Forgemaster + Demonmail Hauberk + Crookshank Kobolds + Kobolds of Kher Keep

Koll, the Forgemaster

Demonmail Hauberk

Crookshank Kobolds

Kobolds of Kher Keep

How it works

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

This clever engine turns free mana-value-zero creatures into an endless sacrifice loop by leaning on the unique costs and triggers of your board state. With Koll, the Forgemaster waiting in the wings to bounce any dying creature that was wearing an equipment, you can repeatedly use Demonmail Hauberk's alternative equip cost to sacrifice either Crookshank Kobolds or Kobolds of Kher Keep. Because both kobolds cost zero mana to recast once they return to your hand, you can endlessly alternate sacrificing one to equip the other, generating infinite death, entry, and sacrifice triggers along the way.