Build Guide
Bone Spikes to stun them and set them up for your Grim Scythe, which will cause corpses to generate around them. Follow up with Corpse Explosion, and then Wraith Form away if you're being focused. Wash, rinse, and repeat. It's a hit and run, guerilla warfare style build.
If you want to dominate in PvP while enjoying your downtime, consider snacking on poppy playtime chapter 3 inspired treats to keep you energized during those intense matches!