A. A Spellbook action or effect that is partly complete remains that way and can be completed despite a Moonbeast’s cancellation. A new action or effect would be prevented. So for example, if Cthulhu has Submerged before the Moonbeast’s arrival, he can emerge. Similarly, if Sleeper has a Cursed Slumber Gate, it can remain where it is or return, but a new Gate can’t be Cursed.