Whether you want to decimate enemy players in the Fields of Hatred or you just want to complete a Seasonal quest, becoming Bloodmarked is part of the Diablo 4 PvP experience. I will go over how to mark yourself and what the effect does in this guide.
How to Become Bloodmarked in Diablo 4
Within the Fields of Hatred zone, hold up on the d-pad and scroll to the skull symbol on the bottom of the wheel to become Bloodmarked. Two areas in Diablo 4 are labeled as the Fields of Hatred. Both zones are meant for player-versus-player gameplay, so you have to be within either zone before you can initiate the mark.