Leggings of Arcana is a quest reward from the quest which starts with Malyfous's Catalogue in Everlook in Winterspring. To complete the quest, you must turn the following items to Malyfous Darkhammer:
- 1 Pristine Hide of the Beast
- 5 Frayed Abomination Stitching
- 5 Arcanite Bar
- 5 Frostwhisper's Embalming Fluid
The Pristine Hide of the Beast is skinned off The Beast by a level 310 skinner. Frayed Abomination Stitchings drop off the abominations in Stratholme. Arcanite Bars can be bought from the Auction House or crafted by Alchemists. Frostwhisper's Embalming Fluid can be looted in Scholomance from the room with Ras Frostwhisper. All of these materials can be collected without having the quest.
Tip: Because Pristine Hide of the Beast is so much harder to get than all other materials, you should collect that material first. Then collect the BOP Frostwhisper's Embalming Fluid and Frayed Abomination Stitchings. Once you have these materials, you can buy the arcanite bars and then take and complete the quest. This minimizes the usage of your quest log and bank space.