Might as well just put this out there. Was doing some testing and the weapon boost seems to work on non-prismatic sub classes just fine. It’s on prismatic when it becomes a complete mess. Can’t really make a video on this, but I’m sure other people have had this issue. Resetting the artifact doesn’t help at all. Here’s a list of examples of how the weapon boost activates and doesn’t activate: Activates on following conditions: -using the respective ability FIRST to activate weapon damage before using other abilities. So if using a void weapon, you would use smoke bomb first. -using abilities on three different enemies will provide a damaged boost for those three elemental weapons at the same time. Smoke bombing one enemy and using ascension on another will provide you with an arc and weapon damage boost. - afflicting an enemy with unravel without using an ability and switching to a sword will provide a strand weapon boost for some weird reason. -freezing an enemy via chill clip or cold steel without an ability and shattering will provide a stasis weapon boost as well. Does not activate our following conditions: -hitting an enemy with multiple elemental abilities such as grapple punch and ascension before using smoke bomb to boost void weapons will not provide a void damage boost. -using perks such as withering gaze or jolting feedback does not provide a weapon boost for said weapon. In short Foetacer and Spirit are not worth running on prismatic since the build revolves around using all of your abilities which includes the prismatic grenade as well. This limits the spamming of abilities and becomes redundant on major enemies and bosses since everyone has their own style when it comes to using abilities. Note: all of this was based on my testing so I may be missing some important information. Feel free to comment and leave some feedback.