http://www.wowhead.com/item=60847#comments
almost based on ED2 it seems. lol
as for non-used, I can't think of any sort of Cockatrice.
---------- Post added 2013-04-20 at 02:42 AM ----------
First recruit a friend mount was a zebra unicorn, same with the silver covenant mount
Closest I've seen is: http://www.wowpedia.org/Graven_one and they are just an RPG class, never used ingame.
Thanks for the awesome sig, Lady Amuno.
Eldrakyn & Hrulgin from the belgariad.
"I was a normal baby for 30 seconds, then ninjas stole my mamma" - Deadpool
"so what do we do?" "well jack, you stand there and say 'gee rocket raccoon I'm so glad you brought that Unfeasibly large cannon with you..' and i go like this BRAKKA BRAKKA BRAKKA" - Rocket Raccoon
FC: 3437-3046-3552
what about bugbears?
the Arachnathids.... from Warcraft III
they're not present in northrend especially into Azjol-Nerub
Liopleurodon?
Keep in mind that this thing is almost the size of a large blue whale. It's the largest predator that's ever lived if I'm not mistaken.
There are still Warcraft 3 units that aren't in WoW. A lot of the units from the Frozen Throne are still not in the game, like the Coatl or the Arachnathids.