Originally Posted by Dr.Samurai *looks at the 5E landscape* Yeah, I think we can introduce a sub-system that says "If you can cast spells from a class feature or feat, you cannot make use of this feature." Shouldn't break anything, except maybe caster entitlement . I kind of think/hope this was said in jest. Abilities that can't work if characters have another ability (not are using that other ability, but have it), are a bad design pattern. It's intentionally creating a Extra Attack dead level problem.