This keychain gives the user the ability to fly, just like birds do. Well, not exactly. There's no wings or physics involved, just a simple disregard for gravity. One can float in place, zip through the air, and even bring along a few others with them. Like most other chain abilities, the ability of flight can be used to act on other people. Sure, it may be against their will, but it isn't against yours(!).
There's some other amazing and incredible stuff one can do with this, but you'll have to wait to find out what it is.