It's a kitbash of various bits and pieces
Mostly a High Elf wizard on foot, some bits trimmed down behind other bits added
Right arm is from the white-wolf (hairy head) sprue in the Knights kit, hand and axe is from Chaos Marauders
Left arm is also from the white-wolf hairy head sprue
Head is two head halves top and bottom from the chaos marauders kit
The thigh armour is from the 6th ed plastic state troops kit
The breastplate is an ancient bit from the skeleton horde box set from about 25 years ago that was in my bitz box.
The two wolf things at the shoulders are from the white wolf hairy head sprue as well.
Cloak on the back is mainly from the white wolf sprue again, and part of more from a chaos marauder, joined with a bit of greenstuff to make it look like one piece, but you can't see that in the photo.