hey guys, these rare spawns, skarr the unbreakable, mushgog and the razza, spawn outside Dire Maul, in 'the maul' which is an arena in the centre of the instances, outside, skarr=58 elite, the razza=60 elite, mushgog=60 elite. Skarr is the lowest level but be careful he is the hardest to beat, he crits 1000's, these guys are no-way soloable, take my word as a lvl 70 gnome warlock (salazzar) on shadowmoon server, ive had assassination blade, maidens circle, 2 1h maces, libram, etc... and until today no orb of deception, i logged onto my lock who is stationed inside the arena, and to my suprise mushgog, the rarest spawn was there, i /w my freind to come and kill lvl 70 hunter, we tried to 2man him, but a lvl 60 hunter and a 60 lock killed us in battle, we rezzed, killed them and summoned our lvl 61 druid m8, killed mushgog and ORB OF DECEPTION dropped, we have decided to sell it and split the gold, /w slazzar, duelpaws, hyperian or neworder, these are my mates if your interested in buying, (shadowmoon server, alliance), btw these spawns, spawn every 6-8 hours, well i gtg it may spawn soon.
hope this helps