a lucky egg is an item that u can steal from wild chansey.... it multplies the experience earned from a pokemon by 1.5. i have a lvl 100 vaporeon with surf, baton pass, aqua ring, and substitue.... a lvl 100 ninjask with swords dance sunny day baton pass and xscissor, and a ambipom with nasty plot, baton pass and agility... even @ low lvls... if u batton pass ur pokemon buffs that max out speed and att or sp att, even if they are half the lvl of the elite 4 pokemon, hey can usually 1 shot them... with a lucky egg attached, this allows u to lvl at a veryy fast rate...