Koll, the Forgemaster + Demonmail Hauberk + Rograkh, Son of Rohgahh + Memnite

Koll, the Forgemaster

Demonmail Hauberk

Rograkh, Son of Rohgahh

Memnite

How it works

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

This clever little engine turns free creatures into an endless loop by leaning on Demonmail Hauberk's alternate equip cost to do the heavy lifting. Whenever you sacrifice Rograkh, Son of Rohgahh or Memnite to equip the Hauberk, Koll, the Forgemaster steps in to return the fallen creature straight back to your hand since it was equipped at the moment of its demise. Because both Rograkh and Memnite cost zero mana to cast, you can immediately replay the one you just retrieved and swap the heavy armor back to it, repeating the sacrifice indefinitely.