12-24% Rending on Enemy Weak Spot Hit for 3.5s. Stacks 5 times.
2.5-4% Bonus Critical Chance on Chained Hit. Stacks 5 times.
Enemy gains +3 Stacks of Soulblaze on Critical Hit.
Gain between 3.5-5% and 14-20% Critical Chance based on current level of peril.
Curios are basically personal preference. Also ignore weapon perks, I haven't checked what is ideal with them (the blessings are fine, specifically the perks I still have to check). There's a couple things you can adjust which will arguably be more optimal. Mainly if you replace wildfire and kinetic resonance with mettle and perfect timing. Wildfire is kind of just taken because I like fire, and kinetic resonance is used to speed up my BB whenever I use shriek. This helps with boss damage as well as taking care of elite packs. However, mettle can basically instantly give you full toughness if you get lucky and crit into a pack of enemies, and perfect timing is basically a free +15% damage to your staff, your BB, and even the fire you apply from blazing spirit and shriek.