Refreshed Dodge Efficiency on Weak Spot Hit. {melee_weakspot_damage} Melee Weakspot Damage.
Hitting at least 3 enemies with an attack, increases your damage by 24-36% for 3 seconds.
5-12.5% Critical Chance for 2s on successful Dodge.
1-4 Burn Stack(s) on Critical Hit to a maximum of 3-12 Stack(s).
It is what it is.
Drink the souls of those afflicted with Soulblaze.
Higher difficulty provides plenty of opportunity to keep your soulblaze going since specials are almost always in the mix. Initiate Scrier's Gaze frequently, especially during hordes. Disrupt Destiny provides the finesse, crit, and weakspot damage the rapier loves, making you an effective meat grinder with light attacks. Tackle specials with heavy attacks to make quick work of 'em. Precognition and By crack of Bone help keep you in Scrier's Gaze longer with horde clearing light attacks to weakspots being very efficient at extending that SG duration. Rapier also provides the dodge and mobility to kite and pick off enemies if you find yourself getting overwhelmed.
Blitz is useful when trying to tackle specials out of reach, but pistol works just as well.
Badass bladesinger vibes.
Alternative to Seer's Presence, you could opt for Prescience, moving the other mastery point to Warp Splitting for additional cleave in melee that scaled with Scrier's Gaze peril generation.