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Onslaught is a warfare skill in Divinity: Original Sin 2.


Attack 5 times with astonishing speed, each hit dealing damage based on the damage equipped weapon has.

Scales off basic attack and gets a bonus from Strength, Finesse or Intelligence.



  • A skillbook can be found in Bloodmoon Island Archive on the right side from the entrance, on the shelves (X:635,Y:831)


Following table shows all NPCs who are guaranteed to sell warfare skillbooks, with their location and coordinates in the right column, from them. The location shown in the table (and the coordinates) are only for the initial location the NPC is in. Note that some of these may have other spell/skillbooks and goods to sell. Gareth may follow the Godwoken on Lady Vengeance if his demands are met.

  • Skillbook can also be bought from Hannag at Cloisterwood. However she only sells Source adept and Expert tier books from combat abilities.
Trader Location (x, y) Trader Location (x, y)
Kalias Definitive Icon (Original Sin 2)
Fort Joy
(488, 565)
Gareth Definitive Portrait (Original Sin 2)
Ruined Castle
(467, 269)
Haran Definitive Icon (Original Sin 2)
Driftwood Square
(345, 125)
Elven Thorndancer Definitive Icon (Original Sin 2)
Elven Thorndancer
Elven Camp
(508, 312)
Black Ring Quartermaster Definitive Icon (Original Sin 2)
Black Ring Quartermaster
Black Ring encampment
(234, 769)
The Lost Knight Definitive Portrait (Original Sin 2)
The Lost Knight
Temple of Tir-Cendelius
(294, 915)
Fionola Definitive Icon (Original Sin 2)
The Cathedral
(275, 283)