This loop turns a single point of damage into an unstoppable engine by exploiting the synergy between lifelink and growth. Once you give Deathbringer Thoctar lifelink, its activated ability becomes self-sustaining: removing a +1/+1 counter to deal 1 damage to any target triggers lifelink, which in turn causes Spider-Man, Peter Parker to grant another +1/+1 counter back to the Thoctar. Because Deathbringer Thoctar's own triggered ability also feeds it counters whenever *any* creature dies, you can easily pivot this sequence into a lethal barrage of infinite damage and infinite life.