Skarrgan Pit-Skulk

Two mechanics here are doing the same conditional work, which is the quiet cleverness of the design: bloodthirst rewards you for having dealt damage to an opponent already this turn (combat, a burn spell, a ping ability, any of it), and the evasion clause keys off this creature's own power, which bloodthirst is the thing most likely to raise. Land a hit before it resolves and the 1/1 enters as a 2/2 that smaller creatures cannot stop, so the same aggression that paid for the counter is also what unlocks its evasion. That feedback loop is what makes it more than a one-drop with a counter stapled on: it wants to come down after the board has already taken damage, not as a turn-one play. The evasion is the strict comparative kind, weighing raw power rather than granting flat unblockability, so a wall of 1/1 tokens can hold off the base 1/1 version all day, but the moment bloodthirst lifts it to a 2/2 those same tokens can no longer legally declare a block. The threshold scales with the body, and it gates on power rather than toughness, so a ground stalled out by fat defenders with thin power still waves it through. It rewards the deck that hits first and asks little of the deck that does not, which is exactly the shape an aggressive green one-drop should take.