Koll, the Forgemaster + Diamond Lion + Sai of the Shinobi + Frostcliff Siege

Koll, the Forgemaster

Diamond Lion

Sai of the Shinobi

Frostcliff Siege

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 ingenious loop centers around an infinite mana and storm engine powered by Diamond Lion's sacrificial mana ability. Because Sai of the Shinobi automatically suits up every entering creature, Diamond Lion conveniently enters the battlefield equipped, satisfying the crucial condition for Koll, the Forgemaster to loop it straight back to your hand upon death. While Frostcliff Siege provides its own passive board presence depending on the chosen mode, the real magic happens as you repeatedly cast, sacrifice, and recur the Lion to generate infinite colored mana, death triggers, and storm count.