Otherworldly Outburst

The clever part is what happens to your worst trade. The +1/+0 is almost a pretext: nudging power by a single point is barely worth a card, and the spell knows it. The real instruction is the death clause, which turns any creature you cast this on into a delayed engine the moment it dies that turn. That reframes combat math entirely. Blocking your buffed attacker no longer kills it for free, because the corpse cashes out into an Eldrazi Horror bigger than most of what traded with it. It also rewards casting this on a creature you already expect to lose, whether to a sacrifice outlet, a defensive block, or a kill spell sitting on the stack, so the spell prefers a board where death is imminent rather than avoidable. The replacement body outsizing the typical early creature it stands in for is the mechanism doing the work: you are not protecting a creature, you are upgrading it through its own destruction. Instant speed sharpens the trick, since you can hold it past the declaration of blocks or wait for an opponent to commit removal, converting their interaction into your value. It is a small card built around a specific emotional reversal, the satisfaction of losing the exchange and coming out ahead.