Snarling Gorehound

The trigger clause is the whole design. It doesn't reward creatures entering; it rewards small creatures entering, and that qualifier quietly picks the deck this belongs in. It pays you for going wide and low, the opposite of the fatties-and-ramp instinct, and turns every one-drop, every token, every mana dork you play after it into a free look-and-sift. The menace on a 1/1 is throwaway text, a way to poke through in a stall and little more; the surveil engine is the point. Surveil, unlike a naked scry, drops the discarded card into the graveyard as it filters, so this doubles as fuel for anything that cares about the yard: delirium, reanimation, threshold-style payoffs. The effect scales with a board state you were already building rather than asking you to redraw your plan to support it. Land a handful of cheap creatures on the same turn and the surveils chain, each one smoothing a draw or stocking a resource while the pressure still lands. It is a support piece, not a payoff, and it knows exactly which archetype it is supporting: a low-curve, token-adjacent black deck that wants incidental card selection without spending mana on it separately.