Lotus Ring + Puresteel Paladin + Marneus Calgar + Garna, the Bloodflame

Lotus Ring

Puresteel Paladin

Marneus Calgar

Garna, the Bloodflame

How it works

1. Activate Marneus Calgar by paying 6, creating two 2/2 Astartes Warrior creature tokens.
2. When the Astartes Warriors enter the battlefield, Marneus Calgar triggers, causing you to draw a card.
3. Activate Lotus Ring's equip ability by paying 0 due to Puresteel Paladin, attaching it to an Astartes Warrior.
4. Activate the Astartes Warrior with Lotus Ring attached by tapping and sacrificing it, adding 3.
5. Repeat from step 3 for the remaining Astartes Warrior.
6. Repeat from step 1.

This fascinating loop transforms Marneus Calgar's activated ability into an engine by leveraging Puresteel Paladin's metalcraft ability, which slashes the equip cost of Lotus Ring down to zero. By repeatedly outfitting and sacrificing the resulting Astartes Warrior tokens, you generate a surplus of mana and trigger Marneus Calgar's second ability for endless card draw. While Garna, the Bloodflame isn't strictly necessary for the core mana loop, her presence provides resilience and haste if you are orchestrating broader graveyard recursion in the background.