Kathari Remnant

Cascade's first wave mostly bolted the keyword onto a body worth casting on its own: a beater, a flyer, something that mattered after the free spell resolved. This one inverts the priority. The 0/1 deals no damage and blocks almost nothing; the regeneration ability keeps it alive without making it threatening. What four mana buys is the trigger itself, plus an evasive blocker that refuses to die to a single removal spell or combat trade while black mana is open. The regeneration clause is the quiet design lever: a cascade payoff that resolves once is a speed bump, but a creature that survives turns persistence into a standing tax on the opponent's removal, soaking up burn and exposing nothing in return. The wrinkle is the cascade math, which digs only for a nonland card cheaper than four, so the spell it flips into is bounded by definition and skews toward cheap interaction or low-cost value. The result is a strange little fixture: a creature whose stat line announces it is not the point, whose job is to convert mana into a free card and then refuse to leave. It reads less like a threat than like a sticky chump-blocker stapled to a one-time card-advantage engine, where the value lives entirely in the spell underneath and the body exists to keep drawing fire.