So we played part 3. One of the monsters is a greater shadow. Can cast "darkness" at will. Darkness is listed as a 2nd level spell, with no other mention of in the monster description.
Casters by level 7, their cantrips are automatically heightened to the highest level (4th) This means that a Greater Shadows ability's are mainly nullified due to the fact that not only does darkness take 3 actions to cast BUT a cantrip beats it every time.
My fix would be that the darkness from the shadow would be as a 7th caster hence 4th slot. Or they may as well not have this ability at all ?FYI played out of book RAW and they got monstered by the PC's.
I was just prepping for Part 3. Good catch on the Shadow ability. It's something people should certainly be aware of when running the greater shadows.
Another thing I noticed--Shadows and Greater Shadows don't have "negative healing" listed like other undead creatures do.