I am looking to set up an effect for the Thaumaturge's Implement's Empowerment class feature. The feature has the following in it's description:

When you Strike, you can trace mystic patterns with an implement you're holding to empower the Strike, causing it to deal 2 additional damage per weapon damage die

I don't see a way to add an effect that does this though. The best thing I can do is add an effect to each of the characters weapon actions that do "DMG: 2", and then update them to 4+ when getting striking runes.