15th level spellcaster with two attacks, seems legit enough.
If Larian will de-level her just to use her in some scenario with a lower level party I will be very annoyed. Like the 5th level "archdruids" or "first druids" we already have. Building a credible world and power hierarchy doesn't seem to be any consideration for them so far.
All current and future party members are de-leveled
But they always have some convenient excuse.
Gale - Certain thing inside him
Shadowheart - Memory lost
Wyll - His patron is in trouble
Karlach - She lost her "devil buff"
Minsc - He is extremely powerful and has special ability that makes him virtually unkillable.
They will definitely have to weaken him dramatically.
