I was browsing Dribbble when I noticed a few shots using an effect which appears to look like a magical beam of light, or a "magical smoke" and I could not find out how to create such an effect. If these effects are created in a software which is different than Photoshop, please let me know. Including a PSD file would also be very nice.
Here are a few examples. Notice the blue/white smoke surrounding the contact card:
And again:
Thanks ahead.