Imoti, Celebrant of Bounty

Cascade has always been a one-shot promise: a single free spell triggered the moment its carrier hits the stack, its value baked into whatever card happened to be printed with the keyword. What this snake does is convert that promise into a standing rule. Once it resolves, cascade stops being an ability certain cards happen to have and becomes a property of your curve, retrofitted onto everything expensive you cast. That is the real design idea, and it reframes deckbuilding around a threshold rather than around individual keywords: every fatty, every bloated removal spell, every top-end bomb now comes stapled to a free spell of lower cost, and the ceiling scales with how top-heavy you are willing to build. The 3/1 body is almost an apology for the size of the engine it carries, a reminder that this is a value hub, not a threat. The gate itself is worth respecting: the granted cascade only attaches to your heaviest spells, so the payoff is deliberately locked behind a big-mana commitment, and the more you lean into that gate, the more free spells you flip while accepting a slower, clunkier deck to get there. It is the rare legendary creature whose text edits a mechanic's fundamental terms rather than simply using it, and the tension it resolves (cascade as a scarce, per-card resource) is what makes the effect feel larger than five mana suggests.