There is no item like Poison Sting... Its a move... I guess you were referring to Poison Barb ?Items Available:
Poison Sting
I was more referring to his Pelipper set, which to the best of my knowledge, was illegal. Wingull learns Roost at level 33 and Pelipper "learns" roost at level 22, but Wingull does not evolve until level 25. Unless I'm mistaken, I don't think you're able to catch a wild Pelipper this early in the gameSuper Training is available, so every evolutionary stone is available. The round says "+ evolutions". There is no doubt or ambiguity here.
blinkie won this battle