Return the Favor

Fork asked you to copy a spell; Redirect (and Deflection before it) asked you to change a target. This welds the two together under a Spree shell and lets you buy either clause, or both, one extra mana at a time. Because Spree costs are additional costs paid on announcement, you lock in your modes and their targets the instant you cast, so the card resolves fights on the stack in whatever shape the exchange demands: copy an opponent's removal back onto their board, redirect their burn to their own face, or do both in one resolution when the stack is rich enough to justify the full four mana. That upfront commitment is the price of the double-red pips; there is no bluffing your way into value after the fact, since you announce the plan and hope the stack still supports it. Cast at its floor with a single clause, it is a narrow trick that whiffs if nothing worth answering is on the stack. Cast at its ceiling, it turns one opposing spell into a two-for-one that can end a game outright. The copy clause reaching activated and triggered abilities, not just spells, is the detail that widens its window: a fetch-triggered draw, an equip activation, a planeswalker loyalty ability can all be duplicated, which keeps it working as more than a spell-only counterpunch.