User blog comment:Nelraye/Gehenna, the Eldritch Horror/@comment-3578129-20140205082048/@comment-24501229-20140208084454

There are many details I wanted to add to clarify aspects of the abilities, but I couldn't figure out how to place an ability detail tab. Oh well.

Ult affects enemies only: all 10 champions on the field will appear identical to Gehenna (even themselves!), including stats. Allies will be notified of the ult but it will not hinder their vision in any way.

Temporary position swap ends when Mass Hysteria ends, meaning that a second position swap will occur at that instance.

Having trolls is unfortunate, but I do not consider it a point to be designed around.

E: Yes, it is pretty strange of an ability. The main purpose of the ability is a gap closer / chasing mechanism. You cannot easily escape using this ability as slows will severely hinder its effectiveness. Another reason why your movements are changed into short blinks is to allow you to blink into an enemy's blindspot, turning invisible, without the enemy knowing which direction you have moved in. I realize this may be an extremely difficult feat to accomplish in game but as this is only a concept, we will never know how feasible it will actually be.

In reality this champion's directional mechanics would be much better if champions had turn speed.