Puresteel Paladin + Haakon, Stromgald Scourge + Lotus Ring + Garna, the Bloodflame

Puresteel Paladin

Haakon, Stromgald Scourge

Lotus Ring

Garna, the Bloodflame

How it works

1. Activate Lotus Ring's equip ability by paying 0, attaching it to the Knight.
2. Activate the Knight by tapping and sacrificing it, adding three mana of any color.
3. Cast the Knight from your graveyard by paying its mana cost.
4. Repeat.
5. If the Knight has mana value 2 or less, this combo nets infinite mana.

This loop creates an infinite engine of sacrifice and resurrection by letting a cheap Knight continually recur itself from the graveyard, fueled by the zero-cost equip ability granted by Puresteel Paladin's metalcraft. With the Paladin on board along with enough artifacts to turn on that equip discount, you can snap Lotus Ring onto your Knight for free, then tap and sacrifice the equipped creature to generate three mana. Because Haakon, Stromgald Scourge allows you to cast Knight spells directly from your graveyard, you can immediately replay your fallen warrior using the mana you just generated. Finally, Garna, the Bloodflame ties the entire sequence together by granting haste so the freshly recast Knight can jump right back into the action, while also triggering Puresteel Paladin's card draw whenever the Equipment re-enters the battlefield.