MTG >Combos >Oathkeeper, Takeno's Daisho +Workhorse +Maskwood Nexus +

Maskwood Nexus makes creatures have all creature types. Equip Workhorse with Oathkeeper and remove four +1/+1 counters from it to add four colorless mana Workhorse will die, and Oathkeeper's ability will put it back on the battlefield. Pay two mana to equip Workhorse with Oathkeeper Repeat the process for infinite mana.