Hitting at least 3 enemies with an attack, increases your cleave by 140-200% for 2 seconds.
25-40% Cleave on Hit. Stacks 5 times.
Your Secondary Attack cannot be interrupted and loses 20-50% of Secondary Attack Movement Speed penalties.
Gain between 3.5-5% and 14-20% Critical Chance based on current level of peril.
This is my favorite build to use currently, although I lack the correct items myself I think these would be the best possible perks and curios based off my own experiences in damnation mode. How this build works is quite simple, you clear hordes with your secondary channel fire. Fighting in close proximity with your team combined with the many kills you will get collectively will give you max warp charges thanks to psychic communion. You are also pretty much guaranteed a single warp charge with kinetic flayer while clearing every 15seconds as well. This damage bonus plus the other warp damage feat gives you insane damage on your channel attack, instantly clearing all hordes. If you need to quell, you can use your psykinetic wrath, at 4 stacks of warp charge the cooldown is very low thanks to quicken and you gain those 4 stacks back fast so you have them for your next wrath. The primary fire of the staff is also very good utility wise, the primary fire staggers most enemies so your team can deal with them and is very fast plus it critically strikes. You crit for more than 1000+ damage with many quick attacks that will stagger larger enemies who your team can quickly take care of. I prefer the devils claw sword because its excellent at clearing enemies in front of you when your quell is to high for your stave and it also passively reduces your quell very quickly, which the force sword will not do. Therefore its great mid fight to switch to if you need to quell but can't do it yourself and have no psykinetic wrath to use. The major issue with this build is you are completely at the mercy of enemies with range, so you must rely on your team to protect you will you watch their backs. In the meantime you can brain blast specials and elites to build stacks for the next time you use your staff and to assist your team. The psyker is easily one shot by exploders and snipers at higher levels, so the curios perks will make it much easier to survive. Just be very wary of what is sneaking up behind you and make sure to frontline when the supermassive hordes come rampaging down the halls. Good luck and I hope people find this build helpful and or fun, FOR THE EMPEROR ;)