Endless Swarm

Epic asks every card carrying it the same question: is one recurring copy each upkeep worth surrendering the rest of your spellcasting? Most answers in this small cycle come in raw damage or a steady stream of removal. This one answers with a board state that snowballs off your hand size, then locks that snowball into your upkeep forever. The wrinkle is the read on the token count: the copies that arrive each turn also create a Snake for every card in your hand at that moment, so the spell rewards holding cards rather than dumping them. Refill your grip and the swarm compounds; empty it and the recurring copies fizzle to nothing. That makes the eight-mana investment less a one-shot payoff than a tap you have to keep primed, which sits uneasily against the fact that epic has already forbidden you from playing the cards you are hoarding to feed it. The tension is structural: the resource that makes the spell scale (a full hand) is exactly the resource epic strands by taking your spellcasting away. It is a green take on the go-wide payoff where the ceiling is genuinely unbounded and the floor depends entirely on how patiently you can sit on cards you will never get to cast.