The Royal Magic Wand (otherwise known as Star's Magic Wand) is the kingdom of Mewni's family heirloom. It transforms to match the wielder's personality. It is the main weapon of Star Butterfly, which she also must protect, in the Disney Channel and Disney XD animated series, Star vs. the Forces of Evil.
The wand is known to be very powerful and a big responsibility, so powerful that if it fell into the wrong hands, the universe could be destroyed. The wand is able to bring whatever the user thinks of into reality. Star can create different things like puppies, snakes, and other creatures. It can also be used to create attacks. When Star uses the wand in a fight, it makes a "rainbow fist punch," a "jellybean hallucination mist," and a mega narwhal blast.
Additionally, the wand can also cause destruction, such as creating flaming rainbows or puppies with laser eyes, as well suck things into oblivion.
The Wand also comes with an instruction manual that contains magic spells that have been mastered and written down by previous owners of the wand. Unfortunately, the book is a complete disorganized mess, which gives the current owner trouble finding a certain spell.