I found a shop where this item sells and I'm curious, it says it reduces the cost of essence by 1 which is good but like the first firebolt spell it only costs 1 essence, does that mean it will be free to use? I doubt but I was curious if anyone had tried it.

edit: OK, I bought the frost version of this robe and I believe it reduces 1 required essence as long as the spell requires 2 or more, not only 1. Pity..