MTG >Combos >Lifelink +Walking Ballista +Light of Promise +

With Walking Ballista with at least two counters, enchant it with Lifelink and Light of Promise. Remove a counter from Walking Ballista to deal 1 damage to the opponent. You will gain 1 life because Walking Ballista has Lifelink Light of Promise's ability will trigger, putting a +1/+1 counter on Walking Ballista. Repeat the process for infinite damage.