Druids - Prowl 2 times per duel.
Rogues - You can stealth only 1 time per duel.And one time Vanish!
Shamans - No rules.
Warlocks - Fear only 2 times per duel Or (Fear + Howl Of Terror) .Suduction is allowed, but only 1 time.
Priests - You can use Psychic Scream only 2 times per duel.
Warriors - No Rules.
Hunters - No Rules.
Paladins No Rules.
You cannot use any potions/flasks/scrolls Only Class Like Rogue is allowed to use poisons !
You can use profession items.
If The Event is 1v1 you can be only self buffed !