Magic, Magick, Magik, Majick, Majik etc.... they are all pronounced the same way and people use them to mean the same thing. It really doesn't matter how it's spelled. None are "real" since they are all merely words and are not things themselves. Just as I can say "chair" that does not make it real... the word is not a thing, the word describes a real thing and as such, the word itself is only as real as the idea.
Aleister Crowley set the precident of using "magick" instead of "magic" for two reasons... to differentiate the practice of illusions and staged slight-of-hand trickery from the use of the exertion of spiritual "Will" to create change in the world. The "k" was added to give the word seven letters. Numerologically, the number 7 appearantly had magickal implications for him.
I choose to use the seven-letter spelling because I like to make that same distinction and also because I'm partial to how it looks. Magick is a real thing.
eclectic pagan witch