Nicole By OPI- A Million Sparkles and Nabi- Purple II

A million Sparkles is a glitter polish that is part of the Nicole by OPI core collection. I do not believe it is a seasonal polish. The polish retails for $7.50 USD each, and is available at most drugstores, Ulta, and even Marshall's/T.J. Maxx/Ross! It is a mixture of red, yellow and blue glitters of various sizes and densities in a clear base, so definitely lay down a coat of a similar color before proceeding with glitter. Mine is "Plenty of Fish in the Sea" by Wet n' Wild.
Overall, I really like the versatility of this polish. Because it is mostly blue with gold and a bit of red, it looks cool with a lot of different colors underneath. Wear was pretty long, but since I messed up my ring finger on day 1, I did an accent nail the next day I wore it.
Nabi has approximately 30-something shades of magnetic polishes, which when they were released retailed for about $USD, but now are about $2 USD. The nice thing about them is the variety of different magnets they come with, so you do not have to use the one on the cap, which is often frustrating. I used the one on the cap for reviewing purposes here and because I only did one nail. Purple II comes with a concentric circle magnet.
Once you get over the weird color, the polish is pretty great. It dries fast, wears for a long time, and the magnet is easy to use. However, I just don't think it is the prettiest color out there. It's one of those shades of purple that kind of borders on dark brown. However, I recommend giving the whole Nabi selection of cheap magnetic polishes a try, and get them while you still can!