Lictor

The design question here is how to reward reactive green play without handing green a hard answer it does not deserve. Pheromone Trail resolves that by keying off the opponent's tempo rather than your own: the token only appears when someone else has committed a creature to the board that turn, turning their aggression into your doubled body. Flash is the piece that arms it. Held up on the opponent's turn, a flashed-in body plus a 3/3 trampler for four mana is a genuine ambush, punishing a curve-out or an end-step commitment with an instant-speed swing in the creature count. Left to a main-phase cast into an empty board, it is a plain 3/3 with no upside, and that gap between the two casts is the entire skill test the card poses. It is a green creature that behaves like a trap, asking you to read the turn before you spend the mana. The Tyranid Warrior token echoes the flavor of the Lictor as a scout marking prey for the swarm, but mechanically the trigger is a clean lesson in conditional value: no counter magic, no removal, just a reward gated behind correctly guessing when the opponent will overextend. Whether it is a two-for-one or a vanilla Hill Giant depends entirely on timing, which is a more interesting place to put a common-tier body than most reactive green creatures manage.