If this power could be used for good, it wouldn't be this power.

If there is no willingness to use force to defend civil society, it's civil society that goes away, not force.

Don't use metaphors in fantasy; your readers will take them literally. Or they may take them figuratively - but if so, they'll also take your magics and transformations figuratively. Either way, you're in trouble.

Just because you’re on their side doesn’t mean they’re on your side.

That's the great thing about doing good: Anyone can do it, any time, no waiting periods or batteries required.

There's a rule for what makes good fantasy work, and it's as strange as any riddle ever posed in a fairy tale: In fantasy, you can do anything; and therefore, the one thing you must not do is 'just anything.' Why? Because in a story where anything can happen and anything can be true, nothing matters. You have no reason to care what happens. It's all arbitrary, and arbitrary isn't interesting.

So many problems are solved simply by knowing enough verbs.