Bruxish seems to come with another Anti-Meta ability just like Yungoos and Nekkoala. Her ability blocked both Quick Attack and Fake Out so it appears to kill Priority moves.
I wonder how this will affect Pokemon like Kelfki and Galewing Talonflame who relied on giving Priority effects to specific attacks.
Depends on whether it actually has decent stats. If it's stats are decent it could be quite nice in VGC where priority, fakeout in particular, is really common.