Eclipsed Elf

A 3/2 that costs three of any combination of black and green digs four cards deep on entry and asks for exactly three things: another Elf, a Swamp, or a Forest. That narrow target list is the design's whole point. This is not raw card advantage; it is a filter tuned to keep a tribal curve honest, refilling on the creatures the deck runs and the two land types they stand on while sifting the flood away. Whatever it passes over does not fall to the graveyard or stack in a known order: the rejects scatter to the bottom at random, which quietly kills any library-sculpting follow-up. There is no stacked top to blink into, no repeatable engine to loop. It selects once, on entry, and moves on. What you get back is the reliability an aggressive creature deck trades away when it thins itself to a low curve: the assurance that the next draw is a threat or the land to cast it, folded into a body that still attacks for three. The hybrid pips do widen who can run it, letting either half of the guild pay in full, but the real discipline is in the payoff being kept to three specific categories. That restraint is what keeps the enters trigger a curve-smoother instead of a value spigot the deck would rather cast than a real threat.