Title says all - I’m making a mage and am pretty set on undead, as will of the forsaken seems like the best racial trait for PvP - but I’m drawing blanks, other than warlocks (I know they have fear), shadow priests, and I think warriors have a fear also - which classes is an undead’s will of the worsaken really viable? I don’t wanna be missing something.
Troll racial is a close 2nd for me - but we’ll see…thanks!
Druids can cast sleep
Hunters can fear beasts.
looks like that’s a lvl 66 move - so not a concern in classic 
Druids get hibernate. It is not a level 66 move. It can only be used on beasts and dragonkin if I recall. I was a druid in vanilla. Hibernate was in vanilla.
Can you hibernate druids?
Charm and fear are from warlocks. Fear on its own can be from priest or War. Sleep is from Hunters though its so rare as to not really be a thing.
If they are in a beast form yes. I used to hibernate bears/cats/cheetahs in BGs running flags. There is nothing more frustrating as a druid than to be put to sleep by another druid.