^Mod Moltare. Mysterious Perk: Tests Inconclusive. reddit.com. 12 April 2017. "Those testing it: you may find it helpful to keep some screenshots with timestamps, for later reference."
^Mod Moltare. Do we know what Mysterious Perk does?. reddit.com. 16 September 2016. "Can confirm only that (a) it is not just an empty perk, and (b) it doesn't do anything that would lead top-end players to consider it mandatory for skilling, bossing or PvP."