[Fern]

Wretched Oil is usually a damage loss without a casting implement unless they have an absurd amount of armor + DR which is usually the result of body guard.

Yeah, this is precisely why I don't like using stuff like Wretched Oil without a casting tool. It's indeed usually better/more consistent damage to swing another button that actually does damage if they're not a super wall of death, specially if they have decent status resist (some people will build like 50-70 status resist just to screw over people with low infliction sometimes.) Off the top of my head, the only other time I think it would be worth it to do a non-casting tool WO is if someone is mega-kiting and constantly out of range (which as far as I understand is considered to be something that should not be a thing anyway.)