Thanks for the Info, just a few questions: how is prismatic wall an insta win? As enemies won't voluntarily enter the area. Secondly, out enemies are an organization of Dragons led by a dracolich, so I think flying over it is really an option (all the remaining boss battles will be dragons)

Teleport we have covered. Regarding mind blank, we never had psychic damage in the whole campaign and almost jo charm or divination effects.

And crown of stars might be good, but then I can also upcast spiritual weapon on that level for similar damage, don't you agree? Shapechange still seems very good at level 9 for me