I think
GW have always been consistent with their orc/ork spelling, so yes, this would seem to be a
WHFB figure (as opposed to a
40K ork psyker, of which
GW also made some very wacky models back in the day).
And yes, I presume it's supposed to represent a wizard/shaman with a looted watering can on his 'wand'

Not one I've seen before.