Koll, the Forgemaster + Diamond Lion + Temur Ascendancy + Ronin Warclub

Koll, the Forgemaster

Diamond Lion

Temur Ascendancy

Ronin Warclub

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 crafty loop relies on Ronin Warclub's clever triggered ability to constantly keep Diamond Lion equipped and ready to profit. When you cast Diamond Lion, the Equipment automatically straps itself on, turning the Lion into an equipped creature so that sacrificing it feeds the mana requirement while Koll, the Forgemaster catches it on the way out and returns it straight to your hand. Meanwhile, Temur Ascendancy gives your looping creature haste and even lets you draw through your entire deck thanks to the constant entries, making the whole cycle self-sustaining.