Rite of Undoing

The two-target clause is the whole design problem. A bounce spell that only hit your opponent's permanent would be a tempo play; a bounce spell that only hit yours would be a niche reset for save-it-from-removal lines. Pairing them mandatorily turns the spell into a trade with a built-in tax: you bounce their threat, but you give up board presence of your own to do it, choosing your least-valuable nonland permanent to soften the hit. That symmetry is what pays for the cheap floor. Delve does the rest: the printed cost climbs to five, but each card exiled from the graveyard shaves a generic mana off, so a turn deep into the game it can resolve for a single blue, with the two-for-one cost still attached. The friction is real on both ends, then: you spend graveyard fuel up front and concede a permanent on resolution. Where it earns its keep is in any deck that wants the symmetry to break in its favor, recurring a strong enters-the-battlefield trigger by sending its own creature home while answering a problem permanent in the same instant-speed window. The combination of a self-targeting clause and an instant's timing flexibility is the design seam worth mining; the spell punishes opponents who tap out into open blue mana while quietly resetting whatever you need reset.