"Beetlejuice beetlejuice beetlejuice!!"

Here's another famous one: "hocus pocus." It's possibly a corruption of the words from the climax of the Catholic Latin Mass: "Hoc est enim corpus meum," which, to the faithful, is the moment of transubstantiation of bread into the body of Christ.

Alacazam, Open Sesame（Says me）. You should definitely read Harry Potter in English if you think magic is interesting, there are probably incantations in there. Actually it's more about how it sounds than that what you say is something people usually say. If you like magic you could read and write on a place like this ( http://www.writingforums.org/forumdisplay.php?s=ddd997b0deed91efafdfcf323f8755af&f=54 ) Fantasy sometimes mixes with fantastical realms outside the traditional Wizardry, but that's present too.

The 3 Witches in Shakespeare's play Macbeth say one of the most famous incantations;' Fair is foul and foul is fair Hover through the fog and filthy air.' It means that appearances can be deceiving and that there is a very fine line between good and evil

Here's a few: "Abracadabra" is a very common saying. Also "Shazam!" and "Sim shalabim!" These are all used dramatically. However, if you want something to open by magic, follow Aladdin's advice and say "Open Sesame!" If casting a spell, you could say "Bubble bubble, toil and trouble" (which is misquoted Shakespeare, but well, that happens.) :)