Talk:Axes (Dark Souls III)/@comment-2600:8804:8840:6930:7CC3:F412:73FC:417D-20190417000044/@comment-4511886-20190417074250

That is the deep battle axe that drops from a mimic in the High Wall. Deep is an infusion that removes all stat scaling (meaning the axe gets no bonus damage from your stats) but gets a lot of dark damage. That icon changes depending on which infusion you have on your weapon. You can find all of them here: Infusion (Dark Souls III)