Dreadsteed

Materials: 2 Elixir of Shadow Power (made from 6 Ghost Mushrooms and 2 Crystal Vials) (was 10, pre-2.2) 6 Large Brilliant Shard 25 Dark Iron Ore 3 Black Dragonscale (was 35, pre-2.1) 3 Arcanite Bar (1x Arcane Crystal, 1x Thorium Bar each) 6g for Shadowy Potions 150g for Xorothian Stardust 1 trip to Scholomance alchemy lab (can't use the one in Shatt or BWL) The next three can be skipped if you know someone else who has them. 150g for J'eevee's Jar 50g for Black Lodestone 50g for Xorothian Glyphs 1 trip to Dire Maul West Total cost for me as of patch 2.0 (I had to buy the jar/lodestone/gl

I just completed the quest for the epic warlock mount, and when I checked my skills I saw that my riding skill had been increased from 75 to 150! So by doing the quest line you actually save about 800 g because of the very high training price.

As of Patch 3.0.3, this spell is trainable. The only requirements are to have trained the first mount, and have purchased the 150 riding skill.