Today I'm going to share with you some swatches and a review of  OPI Which is Witch? from the Oz The Great And Powerful collection.
I was very excited when I received this polish for review, as I don't have many OPI polishes in my collection (well, not yet, but I'm working on it!) and this one is a great addition to it.
Before I got it, I had a general dislike for bar glitters, but this one totally made me change my mind.

OPI Which is Witch? is a holographic glitter top coat with clear base, it has various sizes of hexagon glitter and tiny bar glitter, and this mix looks just fabulous. I have seen many swatches of this polish but I didn't realize how pretty it was in person. I think that if you need to pick one polish from this collection, Which is Witch? will be it!
This polish is packed with the beautiful holo glitter, which makes the application really easy. In just one stroke I received a great coverage of glitter on the entire nail, adding a sparkly look to any base color - this one is just great!
I decided to pair it up with a light blue base to compliment the silver holo glitter, but I think (know!) it will look great with any color, bright colors or nudes, anything goes!
For the photos below I applied two coats of Sinful Colors Sugar Rush which is a pastel light blue, then applied one coat of OPI Which is Witch? and topped it with one coat of Poshe. 
I really love the final result, I couldn't stop admiring my sparkly nails for the entire time I was wearing it. :)

The Collection:
Lights of Emerald City - White confetti adds city girl flair and style to nails
Don't Burst My Bubble - Don't wake me...I'm dreaming about puffy clouds of white.
When Monkey's Fly! - I'm simply bananas for this gold confetti
Glints of Glinda - Only a good witch could turn beige from meek to chic.
Which is Witch? - Is this silver glitter with iridescent sparkle or the other way around?
I Theodora You - This adorable, sheer pink is bewitching on you.
What Wizardry Is This? - Brown Liquid Sand Technology