I found a vial of eerily glowing purple liquid carried by a raised pitfiend. I'm curious where these came from and what they're for. I can't simply ask the fiends as they'd only answer in death and destruction, which is a coincidence since I'll just be answering them with the same.
Repeatable
Slay undead.
Slay some raised pitfiends for more fluid (in High Keep: The Bloodless Incursion)
Quest Rewards above are only the guaranteed XP, faction, and coin rewarded for this quest. Status points and rewards limited by class, race, alignment, etc. are unavailable.