This looping engine is all about a brilliant feedback loop between life gain and creature generation, fueled by Sunbond enchanting Herd Baloth to turn any initial life gain into a cascading avalanche of power. Every time you gain life, Sunbond triggers to place a +1/+1 counter on Herd Baloth, which in turn satisfies Herd Baloth's trigger condition to spawn a 4/4 green Beast creature token. That token's arrival on the battlefield immediately prompts Verdant Sun's Avatar to trigger, handing you 4 life based on the token's toughness. That newly acquired life loops right back into Sunbond to keep the entire sequence running indefinitely, netting you infinite 4/4s, infinite life, and an infinitely massive Herd Baloth.