2h staff from Maut is good if you can get your hands on it. Gushing Wounds, Tendrils, and IS are terrific for you if you can get them as well. Your bleeds don’t hurt anywhere near what they should as we’re not quite a rot spec anymore. Big bites and consistent, high pressure is what’s going to win you matches since Berserk is a worthless cooldown and we don’t have much burst. MI makes survival instincts act like a bit of a burst CD, but it’s not enough.
In PvP you want to aim for mostly Vers/Mastery for pressure since crit is neutered and we lose out a lot from not seeing the biggest bites we can.
For essences I swap between C&S, BotD, and Visions. Visions, I find, is only good when you’ve got squishy targets you can sit on for Incarn to be good. Otherwise I usually just run BotD major with Soul. C&S major with guardian affinity and a defensive trinket like emblem or safeguard is “okay” into RM comps since rogue shreds you while mage hard casts gpyro like a big brain high IQ winner. Otherwise I generally run resto affinity to help with off healing and passive healing (it really does add up).
Good luck cat bro.