Maphr shirt has 0 effect on NO GRADE item. Maphrs Shirt has effect ONLY on Graded Items D, C, B, A, S, R, R95, R99, R110.
Guys You have to understand one thing. Enchanting is a SKILL it's NOT luck stat. It's Non written skill which you earn only HARD way, Meaning hundreds of billions Broken Items and a lot of Crystals. And only after you invest hundreds of billions into this Non written skill, you will be able to do +15 or even +20 cloaks