The Windfury CM set for Shaman shoulder fire effects does not work on a male non-hunched Mag’har Orc. When hunched, it works, but for some reason, it doesn’t work on the standing-upright model.
Set: https://www.wowhead.com/transmog-set=1527/windfury-set
Specific item: https://www.wowhead.com/item=90134/windfury-spirit-guides
The effects work on other races, including Tauren, and even on the female Mag’har Orc.