Ephara's Dispersal

The cost reduction is doing all the work here, and it points the card at a very specific target: an attacking creature, one that is committed to combat. Bounce that attacker and you get the effect for one blue mana instead of three, undoing an opponent's tempo swing at the exact instant they leaned into it. Target anything else and it is an overcosted Unsummon with a surveil stapled on. That gap between the discount and the full price is the entire design: it rewards the timing window a bounce spell wants to hit anyway, and taxes you for using it as a proactive tool rather than a reactive one. The surveil 2 is the sweetener that keeps the card from feeling purely situational, filtering toward whatever you want next while the tempo play resolves. Returning a creature to hand has always carried the same problem: you gain a turn and lose a card, so designers keep bolting on riders (a draw, a scry, a body) to make the trade palatable. Here the rider is aggression-punishing math, which narrows the card to a defensive posture but sharpens it considerably in that role. It is a bounce spell that refuses to be proactive, and prices itself accordingly.