[@gammaflux]
1: just the first two, you would only be able to focus fire to a small part to begin with and it wouldn't be much hotter than a normal fire and the cascading one, "so strong that it can even break through some of the thicker armors, leaving a fist sized hole", even with a downside, can you tell me that that is not overpowered
2: That's fine
3: Well, your off-hand wouldn't be a fist then, it would be a throwing axe, at least until you throw it, so put fist, with no S to show that one fist is being used