Cursed Armament is the only PROC in Legends of the Mara that benefits every Oda fighting the Shattered. This special ability is not stackable, but increases all damage dealt to the shattered for 30 seconds.

With each basic attack, there is a 10% chance that the curse is applied. The strength of the curse starts at a base percent (depending on the weapon), and increases by a set percent per debuff active (up to the weapon's maximum).

Cursed Armament Animation

When Cursed Armament is active, an icon with a tooltip appears under the Shattered's health bar. For this particular debuff, the max time is 30 seconds and refreshes every time a Cursed Armament PROC activates.

In the gif below, the

 

Cursed Armament Weapons

Below is a table of every weapon that has the Venomous Blades ability. Sorting by Max Damage will sort the weapons by strength.