Okay, I am dying to catch Latios, and I have ran into him and all already. So, all I need now is a fast pokemon who learns a sleep move before they exceed level 40. Anyone know any that are fast?

Second question is... where do I get Sharp Beak? I need it.

Thrid question: Is Leftovers in the game at all? I know in Battle Tower a pokemon has it, but would I be able to keep the stolen item in Battle Tower?