Koll, the Forgemaster + Diamond Lion + Ronin Warclub + Frostcliff Siege

Koll, the Forgemaster

Diamond Lion

Ronin Warclub

Frostcliff Siege

How it works

1. Cast Diamond Lion by paying 2.
2. When Diamond Lion enters, Ronin Warclub 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 turns a modest artifact into a self-sustaining mana engine by leaning on the clever automation of Ronin Warclub. As soon as Diamond Lion enters the battlefield, the Warclub snaps onto it, ensuring the creature is always equipped and ready to fuel Koll, the Forgemaster's rescue mission. When you tap and sacrifice Diamond Lion for a sudden burst of three mana, Koll immediately plucks it out of the graveyard and returns it right back to your hand for another deployment. While Frostcliff Siege sits on the sideline (perhaps offering Jeskai's card draw or Temur's aggression if you branch out), the core loop endlessly recycles the Lion to generate infinite mana, storm count, and trigger counts.