This elegant engine transforms Kenrith, the Returned King's modest green activation into an infinite fountain of resources by cleverly discounting and amplifying every counter. Biomancer's Familiar drastically reduces the cost of Kenrith's abilities, allowing you to feed green mana into him for just a single {G}. Meanwhile, Doc Samson, Super Psychiatrist acts as a vital multiplier, ensuring that every time Kenrith places a +1/+1 counter on Crystalline Crawler, the Crawler receives extra counters instead. You simply harvest those accumulated counters using Crystalline Crawler's mana ability to fund Kenrith's loop, generating infinite mana to eventually unlock all of Kenrith's other royal bounties—from endless card draw to resurrecting every creature in all graveyards.