Splitting Slime

Monstrosity usually buys a one-time stat bump and stops there; here the bump is the trigger that doubles your board. The math is what justifies the price: feed the activation, and the three counters turn this into a 6/6, but the becoming-monstrous trigger spawns a copy that arrives as a clean 3/3 with no counters and its own dormant monstrosity ability. So the activation that makes one big body also hands you a fresh small one that can grow into another big body and copy itself again. Each iteration costs the full activation, which is the brake on what would otherwise be an unbounded engine: the copies are real and stackable, but you pay sticker price every time you want to pull the lever. The design leans on a quiet rules detail, that monstrosity is a one-shot per creature and the token enters fresh, so the loop is gated by mana rather than by a finality counter or a tap requirement. It is a slow, grindy take on the Ooze splitting flavor, building a wide board out of repeated investment rather than a single explosive turn, and it asks you to want the bodies more than you want them efficiently.