find this living target dummy, attacks back but never dies

[The Devil]

there is a mob in uldum calld myzerian Myzerian - NPC - World of Warcraft and you wont be able to kill this dragonoid

she has 387450 hp BUT fully heals to that point every 5 seconds which means
if you can take her down to 1 hp consistnetly, then your dps is above 77490 but if not you need a dps mod like recount or skada

[Apennatie]

387k is easy to kill withing 5 secs?

[ev0]

You won't see him if you've done any of the quests leading up to him in Uldum.

http://www.wowhead.com/npc=48444 - turns into that, a dragon, not humanoid

[Khorium]

387k is easy to kill withing 5 secs?

Then obviously, you have done more than 77490 damage per second to the mob... and also, I saw this mob being attacked... It does not die.