I need lucky egg. I realized you need to be the champ to get it. (Not planning to finish the game coz Lillie)
Also the poke doll she gives you in the end
I have these to trade:
Totodile, froakie, litten, Popplio, rowlet, chikorita, Snivy...
I also have pokerus and also rare and expensive items like starpieces, big nuggets and rarebones to give