MTG >Combos >Training Grounds +Twilight Drover +Phyrexian Altar +

Training Grounds reduces the cost of activated abilities by two mana. Remove a +1/+1 counter from Twilight Drover to create two Spirit tokens Sacrifice the tokens with Phyrexian Altar to add two white mana. Twilight Drover's ability will trigger, put two +1/+1 counters on it Repeat the process.