MTG >Combos >Umbral Mantle +Marrow-Gnawer +Ashnod's Altar +

You need 3 or more Rats in play for this combo to work. Equip Marrow Gnawer with Umbral Mantle and tap it to sacrifice a Rat Marrow Gnawer will create three 1/1 Rat tokens Sacrifice two tokens to add four mana with Ashnod's Altar Pay three mana to untap Marrow Gnawer with Umbral Mantle Repeat the process for infinite tokens and infinite mana.