In addition to being monsters with shark teeth or blade hands or whatever else, in After Sundown most monstrous things have access to at least a little bit of magic. It's known by many names in many languages across the four worlds, and it's a fact of the universe that you have to be prepared for if you're hunting monsters or if you are the monsters.
The thing to keep in mind with magic in After Sundown is that it's never good magic. Magic is energy flowing from one of the three hells, and it's always evil. It might be used for a good cause, but in time the taint of evil will eventually twist even the best of intents until it begins to cause misery for the people involved.
"Now first let's get one thing straight about what's going on here."
An individual magical ability is known as a Power. Most powers require that you cast them. Casting a power involves you spending the action, possibly spending some power points, and possibly making a roll. Powers that involve