Citywatch Sphinx
The death-surveil clause is the design idea worth chasing here: a flier that fills the graveyard not by attacking or chump-blocking but by dying, turning a trade you were going to lose into a deliberate dig. The 5/4 evasive body is a fair top-end clock, but the structural work is on the back end. Surveil 2 on death changes the math on removal: the opponent still gets their one-for-one, but you're not left empty-handed, since you look at the top two cards and choose how many to bin. That choice is the point. You might dump both to feed a delve cost or a flashback target, keep both because your next two draws are exactly what you want, or split the difference and set up one draw while burying one enabler. The card asks nothing of you to get there: no sacrifice outlet, no activation, just the creature meeting an inevitable end. Putting the effect on death rather than on a cast or attack trigger moves the timing window entirely; the value lands when the card is already leaving, so the body and the dig stop competing for the same turn. Any deck that treats the yard as a resource rather than a dumping ground gets its return whether the sphinx eats a removal spell, blocks and dies, or trades in the air. That's the quiet elegance of the slot: a finisher you're happy to play and just as happy to lose.

