This brilliant loop creates an unstoppable cascading engine by feeding life gain directly into creature generation and back again. It all begins when you gain life, which causes Archangel of Thune to distribute +1/+1 counters across your entire board thanks to its passive life-gain trigger. The moment those counters land on Herd Baloth, its ability leaps into action to spawn a 4/4 green Beast token. That new arrival entering the battlefield immediately stirs Soul's Attendant, netting you 1 life and looping the entire sequence right back to the Archangel to grow your army infinitely larger with every single iteration.