Kitty124 if you already posted your question in 1 topic you do not need to go to another topic and post the same question. Thank you.

Now to answer your question try this topic:
http://wlodb.com/topics/118

It will show you the hidden skills of all the elements

Sleep - WIS 47, INT 2 - Turn enemies to sleep, last 2 rounds(the same as freeze), lv1 can sleep 1 enemy, lv10 can sleep 4 enemies)

Sleep => 109 SP = Max Lv 10 Upgrades @ 3, 7 = Send Target to Sleep for 2 Turns, Base Success 55%~