This loop is a masterclass in recursive synergy, turning a simple tap of mana into an escalating cascade of stat boosts. It all kicks off when you pay for Benthic Biomancer's adapt ability, which places the crucial first +1/+1 counter on it and triggers its built-in looting effect. That card draw immediately wakes up Shabraz, the Skyshark, granting you a point of life and bolstering the shark with its own counter. Crucially, that instance of lifegain acts as the catalyst for Archangel of Thune, whose static lifelink and triggered blessing pump a +1/+1 counter onto every single creature you control—including Benthic Biomancer itself. Because the Biomancer now has new counters placed on it while its adapt ability resolves (or via the Angel's intervention), you trigger its draw-and-discard loop all over again, fueling an unstoppable engine of near-infinite life, counters, and card selection.