This is the one I bought:
https://www.ebay.com/itm/156574280546
It was done by sculptor Jason_Demon_3d_Studio on Instagram, in addition to Kain’s head he made a 3D model for the Soul Reaver itself as well as a Razel Kit of his head and scarf (would probably go good with a Red Death body) as well as a set of feet and hands that look like their hoofy clawed digits
His business seems to be making STL file packs for print farms to sell on eBay, which means there’s other options on who to buy from, some will even resize for you (Marvel Legends, Mythic, 1/6, 1/18, etc) like this guy
https://www.ebay.com/itm/196887616222 whom I’ve also bought prints from and they’re also good.
If you want to see a photo of the actual head I bought, give me a day to cobble together a more Kain like body for it. Right now it’s just sitting unpainted in my “to do” pile and that’s not doing it any favors…