Evs are effort values from wild pokemon, like for every 4 EVs you get, it adds a whole point to your main stats, a stat may have a max of 255 EVs, and only a max of 510 EVs are allowed for a single pokemon. For instance, Gardevior gives 3 sp.atk EVs, so killing 100 Gardeviors will give you 300 sp.atk EVs, maxing it out. Hope you understood.
"It all starts with this, a jewel containing the ultimate power." -Shadow "I still remember what I promised you, for the people of this planet. I promise you, REVENGE!" -
No one knows Shadow better than me. Or likes him more either. Go ahead, try me.