Powerful and mysterious?
* "Expecto Patronum" (from Harry Potter)
* "Abracadabra" (classic and versatile)
* "Hocus Pocus" (lighthearted and fun)
* "Alakazam" (a little more whimsical)
* "Shazam!" (powerful and exciting)
Specific and focused?
* "Lumos" (to create light)
* "Alohomora" (to unlock doors)
* "Wingardium Leviosa" (to levitate objects)
* "Accio" (to summon an object)
* "Reparo" (to repair something)
A combination of both?
* "Serpensortia" (to conjure a snake)
* "Protego" (to create a shield)
* "Stupefy" (to stun someone)
* "Avada Kedavra" (the Killing Curse)
Ultimately, the best magic words are the ones that resonate with you and your imagination. Don't be afraid to experiment and create your own!
What kind of magic are you hoping to create?