[Pernicious]

It takes a bit to get to that final stage (where you actually have to use those three mats you buy). You have to run around gathering the supplies, make a trip through the Shadow Hold in Felwood, visit the Alchemists Lab in Scholo (and no you can't cheat and use the one in Shattrath City, I tried), but when you finally do get the quest Xorothian Dreadsteed, you're nearly there.

Make sure that somebody in your party has the Crescent Key. Sure you can kill yourself and rez on the other side of the door, but later on there is another door you need the key for and you cannot get around it by dieing. If you don't have the key, you'll need to run Dire Maul East for it, probably about an hours run if you're all on top of things. If you do the run for the key, enter Dire Maul East on the opposite side as you enter West, and not the southern entrance. You'll find an Imp there, talk to him and chase him through the instance, eventually you'll have to fight him and he'll give the key to you afterward.

If it is your first run through Dire Maul West, expect around two hours or more while you explore and make sure you're on the right course. If your with a team of level 60ish players, prepare for a standard run, bring a tank, healer, and dps with you. I suggest bringing another lock as most of the mobs (trees too) are banishable. If you have a 70, you can probably get through most of this without a typical team with you. I've run people through in under an hour on my 70 lock, but I've done this quest so many times I could do it blindfolded and still get through it quickly. If you're with a 70, expect around an hour or less depending on their class.

While in Dire Maul West, you need to kill all the elementals that surround the 5 pylons. One pylon is just in the courtyard inside the enterance, then you will take the right most path up to the second floor. If you go down a ramp and see a big elite tree, you took the center path, go back up the ramp, turn left (use detect invisibility at all times after this point). Anyways two more pylons are up above, then you can drop down and take that center path through the door behind the elite (remember that Detect Invisibility here too). In the large chamber, you'll find the final two pylons.

Killing the Boss is easy, keep moving to avoid the Eyes, and DPS. Immol'thar is a cool looking boss, I wish we could have him as a pet. If you have a high level skinner have him/her skin the boss, otherwise do your best to kill him off the center platform as he will make it difficult to do the quest until his body fades away. That center platform is where you open the Jee'ves Jar.

If you die during the lock event, run back in, you didn't fail the quest. wait til it ends and then go up into the center. Mobs may still be in it, but as soon as you enter they will vanish. Use this as an opportunity to scare your party members as they'll all expect to be attacked.

After you summon the mount and kill it and the dreadlord, remember to talk to the horse spirit to get your mount. Additionally, if you got the quest between the second and third pylons on the top most level, you'll also need to kill the prince under the stairwell in the library just off the chamber you're in (look for the closed door). its a quick quest so you may as well do it.

Good luck, and Gratz! in advance!