The rules for "falling" are:
(…) At the end of a fall, a creature suffers 1W6 stick damage per 10 foot fall, up to 20W6 …
When looking at the reverse gravity I realized that it says:
(…) When a solid object (such as a blanket) appears this fall, falling objects and creatures will encounter it just as they would in a normal fall down …
And then in this related question, "Does reverse-gravity damage-resistance apply?" it is shown that falling damage, even from this spell, is still bludgeoning damage. Is there a way to change the type of damage caused by a fall?
Maybe an object has this property explicitly or there is a way to change it all Damage dealt by a creature to another type, which also includes casualty damage?
If this is possible, certain creatures, such as the Treant, would suffer more damage from falls when being hit or used by a cliff reverse gravity it would be more effective.
If a method is available both PCs and monsters, that would be ideal. But if there is one method available only for PCs, and another method available only to monsters, it works.