This weapon Blocks both Melee and Ranged attacks. Additionally, Block Cost is reduced by 22.5-30%.
Guaranteed Activated Critical Strike. 15-30s Cooldown.
2 Shots on Critical Hit. 2-5% Ranged Crit Chance.
-8.5--5.5% Charge Time on Chained Secondary Attack. Stacks 3 times.
My general purpose all rounder psyker build. Greatsword for boss damage and fun horde clear. Staff for horde clear, or anti-special/elite. Assail for emergency horde clear or regen toughness. Assail also synergizes well with scriers gaze (warp unbound recommended.) Disrupt destiny for easy free boost to critical and weakspot damage, both of which help greatly help assail and your staff. If you want to use the sword for pure boss damage then could always change the blessings to something like Riposte/Precognition/Unstable Power/Shred, etc.