Viewing evil as a magical or supernatural force—as something with real, tangible presence—can be dangerous. Treating it like a tool, as if it were bad luck or a spell to be wielded, is equally reckless.
It can be seen as both.
Evil may seem inherently magical, or it may be used to perform magic without possessing any true occult power. Sometimes, it’s seen as a force compelled to carry out a kind of magic that doesn’t naturally belong to it.
It is possible to think few view evil in those ways, but their actions certainly show otherwise. Maybe it is the actions that count. To treat evil as magic, means any attempt to understand the evil person is opening up to it, letting it in. Evil if treated like magic, will be treated as something that cannot truly be understood as it is so crafty. It will trick where it can. It will also infect as a virus would. It might incubate for years but it is still a vile potent enemy.
Revenge is a foolish pursuit. The person who exacts it knows that but reasons, "It will be different this time!". Why? Is God or some magic force or sheer luck going to help? Revenge then can seem reasonable to those who believe there's something magical in the act or around it. They think justice wants to be restored and will magically ensure that. When you believe you're fighting magic as in evil, you're likely to respond with magic as in evil.
I would warn that notions like, "There but for the grace of God go I!" are harmful. There no matter how much harm a religious practice or faith has done, it is reasoned that it would be as bad or worse without it. That is a very strong stance to take over something that is not known and cannot be tested. It amounts to disrespecting the horrors and terrors that others have to endure so I can feel that little bit better or morally right. A vengeful person will easily reason that it would be worse without the revenge they have inflicted no matter how wrong it seemed to have gone.
And if you imagine evil is always lurking, waiting to strike, then revenge begins to feel not only justified but necessary. You will feel you have to strike pre-emptively.
Magical assumptions are hidden in the background when you exact revenge.
That is you the individual. But what if you are the head of state and think other nations are an existential threat?
Faith in the supernatural is arsenic.