I agree with@ash elemental's point. We also saw that on the nautaloid itself. One push of a button and *bam* instant transformation.
I'm not sure what to do with the mural that @surface R has posted. The underdark mindflayer tells us that nautaloids can no longer be made and are relics of days of empire. So is that mural an Ozymandius like mural or a vital clue? If the later then that would point to Ilsensine if the former it could point to Vlaakith or the dead three.
I had originally dismissed Vlaakith but some spoilers in the datamining thread have made me reconsider.
