Koll, the Forgemaster + Diamond Lion + Hammer of Purphoros + Sai of the Shinobi

Koll, the Forgemaster

Diamond Lion

Hammer of Purphoros

Sai of the Shinobi

How it works

1. Cast Diamond Lion by paying 2.
2. When Diamond Lion enters, Sai of the Shinobi triggers, attaching itself to Diamond Lion.
3. Activate Diamond Lion by tapping it, sacrificing it and discarding your hand, adding three mana of any color.
4. When Diamond Lion dies, Koll triggers, returning Diamond Lion from your graveyard to your hand.
5. Repeat.

This loop relies on Koll, the Forgemaster to act as a recursive engine by turning your graveyard into an extension of your hand whenever an equipped creature bites the dust. Diamond Lion serves as the explosive mana source of the operation, sacrificing itself for a burst of three mana while sending itself straight to the graveyard. The clever inclusion of Sai of the Shinobi ensures that this cycle functions smoothly by automatically equipping itself to the Lion the moment it hits the battlefield, satisfying Koll's prerequisite that the creature be equipped. While Hammer of Purphoros isn't strictly required for the mana-generating loop itself, its presence on the board grants your entire team haste to immediately capitalize on the infinite storm count and trigger loops you've just unlocked.