Would this be viable? I'm 680, don't have the tier or archimonde trinket yet, and I think it'd help my rather low envenom uptime. I play mut 100% of the time too, can't stand sub and not a fan of combat either.
Crit is best when you have 2t17 (BRF) until you get 4t18 assuming you keep 2t17 until 4t18. To find out the exact stat weights for your gear, go to shadowcraft.