Dig Up the Body

Instant-speed graveyard recursion is rare enough that the timing alone would justify the slot; the wrinkle is what it asks you to pay to double the effect. Casualty turns the return clause into a fork: give up a creature of power 1 or greater as you cast, and the spell copies itself, giving you two resolutions, two rounds of milling two, two creatures dragged back to hand. The economy is deliberate. The body you feed to the casualty cost becomes fuel twice over, once as the price of the copy and again as a candidate the copy can pull out of the yard, so the card rewards decks that treat their own creatures as spare parts rather than a defensive wall. Note that neither the return nor its copy uses the word target: you choose the creature on resolution, after the milling resolves, which means the recursion cannot be redirected or stripped by targeted graveyard hate and lets you pick from whatever the mill just buried. The milling is not incidental either: it stocks the graveyard the recursion wants to raid, so a single cast can prime its own return candidates across a game. The instant speed is what lifts it above a plain Regrowth, letting you rebuy a creature after a combat trade or in response to removal, at the moment the value peaks. It is a self-fueling loop built for a color that has always paid life or bodies for card advantage, folded into one instant that scales with how much you are willing to feed it.