Onslaught stacks works on skills that deals damage, has cooldown, is not a “true” summon and is not a “debuff” (i.e. has no “-x” readings on it like “-300 offensive ability”, “-34% fire resistance” etc). Here is a list in case you are totally confused, I have tested them all in game. Have fun with your onslaught stacks!
Onslaught also works on damage over time (dot).
Skills that deals damage over the entire duration, like Sigil of Consumption, Devasation,… will benefit from Onslaught stacks for all their damage during that duration.
If you have not gained an onslaught stack in 5 seconds, they will all vanish and you have to start building them up again.
Berserker
Leap - Yes
Bonechilling cry - No
Winds of Asterkarn - No
Cold Snap - Yes
Rip and Tear - Yes
While you can not use the skill “Onslaught” while in wereform (werewolf, wereraven), there are items that makes you able to generate onslaught stacks instead of the skill “Onslaught”. Werewolf, wereraven can neither use default-attack-replacer skills (DAR) nor weapon pool skills (WPS). But, there are items that makes you generate onslaught stacks with feral claws, winds of asterkarn, drain essence, etc .…
Inquisitor
Word of Pain - No
Horn of Gandarr - Yes
Flames of Ignaffar - No
Rune of Hagarrad - Yes
Rune of Kalastor - Yes
Storm box of Elgoloth - No
Inquisitor Seal - No
Arcanist
Olexra Flash freeze - No
Callidor’s tempest - Yes (transmuted, does not work on non-transmuted)
Devastation - Yes
Albrecht’s aether ray - No
Trozan Skyshard - Yes
Panettis replicating missiles - Yes (if you add skill recharge time, e.g. Ludrigan set, otherwise it does not work)
Mirror of Ereoctes - No
Soldier
Forcewave - Yes
Cadence - No
War Cry - Yes (if you add damage to it via items, otherwise it does nto work)
Blitz - Yes
Blade Arc - Yes (transmuted, it does not work for non-transmuted)
Counter Strike - No
Shaman
Primal Strike - Yes
Savagery - No
Wendigo totem - No
Storm totem - No
Wind Devil - No
Devouring Swarm - No
Grasping Vines - Yes
Summon Briarthorn - No
Conjure Primal Spirit - No
Occultist
Sigil of Consumption - Yes
Doom Bolt - Yes
Curse of Frailty - No
Summon Familiar - No
Summon Hellhound - No
Bloody pox - No
Dreegs evil eye - Yes (transmuted, does not work on non-transmuted)
Demolitionist
Blast Shield - No
Blackwater Cocktail - Yes (transmuted, does not work on non-transmuted)
Canister Bomb - Yes
Grenado - Yes
Flashbang - Yes (if you add damage to it via items, otherwise it does not work)
Stun jacks - Yes
Mortar Traps - No
Vindictive flame - No
Fire Strike - No
Thermite mine - No
Oathkeeper
Aegis of Menhir - Yes (but not if you reduce its cooldown to 0 sec, e.g. via conduit amulet)
Vire’s Might - Yes
Judgment - Yes (but not Hearth of Wrath)
Summon Guardian of Empyrion - No
Righteous fervor - No
Eye of Reckoning - No
Necromancer
Drain Essence - No
Siphon Souls - No
Ravenous Earth - Yes
Reap Spirit - Yes (only the “spell” dmg part, the summon does not get extra dmg)
Raise Skeletons - No
Summon Blight Fiend - No
Ill Omen - No
Spectral binding - No
Bone Harvest - Yes
Nightblade
Phantasmal blades - Yes (non-tranmuted, transmuted skill does not benefit from onslaught stacks)
Blade spirit - No
Amarastas Blade Burst - Yes (but not if you reduce its cooldown to 0 sec, e.g. via Amarastan crusher)
Shadow Strike - Yes (but not on Nightfall)
Blade Trap - No
Ring of Steel - Yes
Skills from items (this list will be long lol maybe I add stuff here if requested
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