Wizard Tower of Gaindrac-Kefas

Gaindrac-Kefas was an apprentice of Dorac the Dreadful. He was a kinder soul, less given to the dark arts and once he achieved the rank of Master he hoped his tower of learning would be a beacon of light. Dorac did not take kindly to his former apprentice departing from the dark path, and so cursed him. Gaindrac-Kefas has not been seen since. 

A two-part tower, the upper section held aloft by strange arcana. A portal connects level 1 to level 4 (and back) if the correct incantation is known to activate it.

Making of video: https://youtu.be/6LDwY0zEjkQ