Caster Plane of Mischief Robes
 

I assume that for caster robes in Plane of Mischief that you use a Robe of Distraction instead of Breastplate of Distraction.

However, I can't find a 100% answer on the question and it would be a mighty big mistake to have the wrong one.

Does anyone know for certain which is used?

casters use Robe -yes confirmed

Thanks :D