Koll, the Forgemaster + Memnite + Phyrexian Altar

Koll, the Forgemaster

Memnite

Phyrexian Altar

How it works

1. Activate the Equipment by paying its equip cost, attaching it to Memnite.
2. Activate Phyrexian Altar by sacrificing Memnite, adding .
3. When Memnite dies, Koll triggers, returning Memnite from your graveyard to your hand.
4. Cast Memnite by paying its mana cost.
5. Repeat.

This clever loop turns zero-cost artifact creatures into a perpetual engine by pairing Phyrexian Altar with Koll, the Forgemaster. Because Memnite costs zero mana to cast, sacrificing it to the Altar generates the exact mana needed to replay it once Koll's triggered ability bounces it back to your hand upon death. While the provided steps mention an equipment keeping Koll's recursion active, this entire engine operates smoothly as long as Memnite enters the battlefield equipped or enchanted to satisfy Koll's condition, letting you endlessly recycle the same creature to farm sacrifice, death, and storm triggers.