MTG >Combos >Gemstone Array +Doubling Season +Vorinclex, Monstrous Raider +

With all cards in play: Pay two mana to activate Gemstone Array's ability Doubling Season and Vorinclex's ability will trigger, and instead of you adding a counter, you'll put four. Remove two counters from Gemstone Array to add two mana and activate its ability again Repeat the process for infinite mana.