[Lunaryon]

Depends on the coven.

In fact, Trick or Treating was a Wiccan tradition first. All Hallows Eve is the night when the barrier between this world and others is thinnest. Monster and ghosts cross over easiest on this night, and taking the disguise of such a creature protects you from being chosen as a target by them.

Those who do not are expected to give something to the beasts to keep them from being a target of their mischevious nature.

It is also a time to remember those who have passed on, because of all times of the year a Seance is best done on this night to speak to them.