Also, I want to quickly mention the law of 3 and some reasons I'm not a HUGE fan of Wiccans
As I've experienced, magic is more like a computer program than a person. I.E. It takes the path of least resistance.
And if you don't prepare your spells well, then there's a HIGH chance of backfiring. It's happened to me several times.
And, when that spell backfires, it's easy to try and make a law to justify why you messed up, instead of picking apart why you went wrong.
TL:DR; Be very, VERY specific when casting spells.