How much can the stats of a pokemon go up after it has reached lv 100? Do stats affect accuracy whatsoever, b/c i had a pokemon in my blue version that missed an attack when battling a friend, even though my pokemon has 100% accuracy. And just 1 more question, how long would a sand-attack (or other similar status-changing attack) last during a battle?

Hey thanks for the reply. And to add to your answer about stats, my pokemon are only lv 84 and they wont take calcium, carbos,...,or even and HP up.

Stats are in affect for the entire battle. So using double team on my jolteon will last against any opponent pokemon (as long as i don't switch jolteon out) correct? And if i use sand-attack against an opponent, the effect will wear off it they switch pokemon right?