Serrated Wing Axes. I think this is one of the relic weapons cause the weap indicated in the last map was a hammer? Forgive me for my "noob-ness".
There is a separate and detailed guide to the new weaps, gems, relics and stats, made by Thren. Here's the link:
Thank you Tata for allowing me to take photos. He was offering me to trade it for a relic gem. Stats also posted.