It doesn't make sense.
By the book lore Gortash knew that the prism disrupt ilithid powers. Yet he sends an ilithid which is only kept in check by elder brain mind control to get it.
Neither does the timing of the tadpoling. When did the emperor even abduct the party? Most of them were in Baldurs gate and you don't just fly into Baldurs Gate with a Nautiloid. Especially Gale could have blown up the ship on his own if it tried to openly abduct him.
And if they were abducted before, why weren't they tadpoled before the mission instead of after the raid when their support was needed most?
That Mephi simply allowed Gortash to take the crown also makes no sense. What would he possibly gain from that?
