Dream Seizer
The clever wrinkle here is that the discard is not free: when the enter trigger resolves, you choose whether to blight, and blighting means shrinking one of your own creatures as the entry fee. That reframes what an evasive body is actually doing. Most enter-the-battlefield disruption asks nothing of your board; this one turns your own material into ammunition, so the ideal recipient is a creature that wants to get smaller (something with an undying-style or persist-style payoff, a token you can afford to weaken, or a body whose surplus toughness you can spare) or one that has already done its job. The 3/2 flier then becomes a clock that funds its own value engine, since every opponent sheds a card the moment it lands. Read the other way, it doubles as a sacrifice-adjacent enabler: if the debuff finishes off a dying creature or knocks a one-toughness token to zero, the discard rides along on a death you wanted anyway. The tension lives in that resolution-step choice, weighing a permanent penalty on your half of the board against hand disruption on theirs, and the right answer shifts with what you have in play. Without a willing target the whole thing is optional and simply declines, leaving a flier that has to earn its keep through the air. It is disruption built for a board that already has fodder to feed it.
