One of the neatest things about fantasy writing is creating your own set of magic in the novel. I would say most fantasies have some form of magic to them. Typically, not everyone in the land is magical. People have different skill levels, even involving magic. A lot of magic involves world building (topic for next week).
A few questions a writer should ask when approaching magic:
Who has the magic abilities and why?
Born magical or can magic be learned?
Is it natural magic or do you have to have something to produce the magic (wand, special ingredients, etc.)?
I love the use of wands and wand-work in the Harry Potter series. They create a great visual, like sword-fighting. I also love the simpler magics, where an incantation can work, a mixture of herbs/plants, or even just energy building into the power of magic. In Lord of the Rings, I love how magic and power are entwined in the objects of the rings.
For The Phoenix Prophetess, I used their own inner power to create and manipulate the world around them. Yet, in The Foxwick Chronicles, there are more incantations and herbs/plants magic. It's fun to work in magic for novels because the possibilities are endless and well, magical.
If you're a writer, what type of magic have you used in your works? As a reader of fantasy, what type of magic do you like to see best?