Fragile

Any touch or damage, with the exception of lightning damage and Lightning Explosion, kills the 'Aaberon and instantly trigger a Lightning Explosion.

Mesmerizing appearance 

The flowing cloud is mesmerizing causing anyone staring for too long to be mesmerized by the flow of smoke. While in this mesmerized state you cannot do anything other than walking towards the 'Aaberon. If you start your turn in this state role a DC 17 Constitution saving throw, on a failed save you have to use all of your movement to go towards the 'Aaberon. On a successful save you snap out of it and can avert your eyes from its' mesmerizing being. If you at any point take damage you also snap out of it. Upon touching or damaging the creature you instantly trigger a Lightning Explosion.

Lightning Explosion

The 'Aaberon explodes into a ball of lightning in a 15-­foot sphere . Each creature in that sphere must make a DC 17 Dexterity saving throw, taking 16 (3d10) lightning damage plus 9 (2d8) force damage and is pushed to the nearest edge of the sphere on a failed save, or half as much damage without being pushed on a successful one. The 'Aaberon is instantly killed in the explosion.