Plasmancer

Land-fetch stapled to a flyer, a body-plus-fixing package the color pie usually hands to green and rarely gives black in the same slot. The trick is the target: it retrieves a basic Swamp, not any land, so this is smoothing for a mono-black manabase rather than color correction, closing the gap between drawing your fourth swamp and evolving toward whatever the deck wants to do next. The 3/3 evasive body is what elevates it past a glorified cantrip: it applies pressure or trades up in the air while its enters-the-battlefield search quietly thins one basic from the library. Nothing here is doing anything a veteran hasn't seen from black's ramp-and-fix toolbox, but the combination of flying, a serviceable body, and a land in hand is the kind of low-variance value that reads as filler and plays as glue. Built plainly for the tribal-flavored multiplayer decks it debuted alongside, it earns its spot by being unspectacular in exactly the way a curve-filler should be: it rarely whiffs, it never demands support, and it puts a card in your hand while it holds the sky.