This loop is a masterclass in recursive synergy, turning a single initial life-gain event into an unstoppable wave of growth. The engine kicks off when Heliod, Sun-Crowned rewards that life gain by placing a +1/+1 counter onto Scurry Oak. That influx of counters triggers Scurry Oak's ability to manufacture a 1/1 green Squirrel token, whose arrival immediately prompts Angelic Chorus to heal you for its toughness. Because you just gained life, Heliod, Sun-Crowned triggers all over again, creating a self-sustaining loop that infinitely pumps Scurry Oak and floods the board with tokens.