Finding Dramentus is a huge pain

Were the gem golem spawns around the Tower of Healing never upgraded?

My guess is they're part of the never ending T3 revamp.

You could always make a hotkey to help find him.
Right click on a button and select Edit Hotkey.
Add action type box scroll to Text Command.
Action details box type in /select Dramentus
click the + next to the action details box
bottom left of window click box and select an icon
click save.

Now you have a hotkey that will say something like "There is no enemy with this name" but once your in range of him it will select him and point the way.
This also works for most boss mobs by just changing out the name.
Your yet to come across the really tricky to find boss mobs ;)

Hope this helps.

If you go to a typical mob spawn, but the mob isn't to be found, start killing off the regular mobs. He will show his face eventually.

Yep, what others have said.

I agree, he probably is a pain to find. But thankfully that will be getting fixed sometime this year with the T3 revamp. :)

He is set up to spawn, though. It's just that the Citrine Golems have upwards of 25 regions where they can spawn, all are linked, and he can show up in any of them. I did a quick increase to the chance of finding him for the next update as a temporary fix until we can really do a revamp of the area.

I'd been doing something sort of similar, Sindala: I bound "Cycle Nearest Enemy" to the Tab key and spammed it about ten times a second.

Great to hear the area is on the to do list and that there will be that interim improvement. :D Thanks!