OMG, I just got my IWD sorcerer up to level 7 spells in Heart of Winter, and I took Project Image for the first time since 1998.
After realizing what it does, I immediately had the image cast Invisibility on my true self. Then, it was free to cast my entire spellbook without revealing me, or actually expending any of my spells, or allowing any enemies to see my true self.
Good lord, I have read previous threads and advice about this spell, but, as long as my image casts Invisibility, and possibly Spell Immunity: Divination, on my true self, (or should it cast Spell Immunity: Divination on itself?) wouldn't that make me pretty much invulnerable while my image casts my entire spellbook at enemies, all without actually costing any of my real spells?
Is the limitation that it only takes one hit to dispel the Projected Image? But then, what if the Image casts Stoneskin and Mirror Image or the like on itself? Or, what if the rest of my party keeps any enemies off of the Image?
What exactly are the limitations of this spell?
Do some players avoid using it at all, declaring it the ultimate cheese?
Could some friends give me some insights here?
Regardless, good grief, what a powerful spell, and only 7th level. Maybe it should be rolled together with Simulacrum and made a 9th level spell? I can't believe I've never realized just how powerful it is before having read hints from this forum.
EDIT: This discussion, which started as my gush about the Project Image spell, has evolved into also being about the nature of illusion magic vs. reality.