- "As If": This was added to the FAQ (v.1.7, March 2020) and then amended (v.1.8, October 2020). You can read the October ruling on the ArkhamDB rules page here. (I'm adding a hyperlink rather than retyping the rules in case in future the ruling is changed or amended - at that point, the rules page will be updated and all ArkhamDB FAQ entries will link to the correct ruling.)
Revelation - Attach to the non-permanent, non-weakness asset you control with the highest printed cost. Otherwise, Threads of Reality gains surge.
Treat attached asset as if its printed text box were blank (except for Traits and forced abilities).
Discard an asset you control: Discard Threads of Reality.
Clarification from FFG regarding activating encounter cards from other players:
Question: An encounter card attached to a player card is not considered to be in your threat area, but can it still be activated by another player? I.e. is an encounter card attached to a player card considered to be "a scenario card that is in play at the same location as the investigator"? (Rules Reference "Activate Action" p. 4)
Answer: Yes! It may not be in your threat area, but it is still a treachery at the same location, and therefore may be triggered by any investigator at that location.