Moldrak Drin  

I spent some time today camping Moldrak Drin. While waiting for him to spawn,
I decided to try to take down Sandgiant Husam (who conned dark blue to me,
a 34 Bard). Husam knocked me down to 33% pretty fast, so I zoned to Oasis;
I had Husam down to 50%, so I quickly healed up using my heal song, and
then went back into SRo to finish him off. But, at first I couldn't find him. I figured
someone else must have gotten him, so I went back to camping the sunken
tower where Moldrak spawns. To my surprise, when I got to the tower, there
was Sandgiant Husam, duking it out with Moldrak! They fought until the giant
started to run. They had I joined the fight then, and killed the giant pretty fast
because Moldrak and his pet had got the giant down to about 25%. Then, I
turned on Moldrak (who was at about 20%), killed him, and then his pet.

So, it seems that if Sandgiant Husam is up, he can sometimes wander over and
have a brawl with Moldrak.

All I got for my work was a cracked staff; no ring. But, he has just popped again...

There is a good probability that he was left standing in another part of the zone after his prey was either killed or left the zone. From what I have observed he will not return back to his spawn point (the sunken tower in the desert) on his own, and even Sense the Undead will not lead you to him if his pet has been killed. If you die from him he will stand guard over your body until you return. I have been able to sneak close enough to drag my corpse without getting his agro. If you do get his agro on your corpse run, run for zone and hope you get there before his nasty Heat Blood boils you alive, or he turns you around with fear and pushes you farther away from escaping. I have dropped from level 26.17 to 25.12 trying to kill him and in the last of my attempts I had his pet killed and only him to deal with, also had him led clear down to the Innothule Swamp entrance. I was going to try a go in and melee, zone out and heal, then back in again before he healed himself very much for more melee, to wear him down little by little. Well, he took up a position way up on the side wall of the zone entrance where I could not climb up to melee him, but he could fear me as I passed by not seeing him up there. He was also too far above to hit with arrows. At that point I gave up for the night. My apologies to anyone that zoned in to meet him, he's just a sneaky sob necro and I will be back to deal with him later after I've licked my wounds for awhile.