Damn, a lot of great logos.
I like the idea, Twenty. Although the "A" destroys it a bit, yet again I like the idea with putting them all together like that.
ilakon, the second one is the best of those, really nice one.
Tandtrollet, I like your ideas, they're good. Unfortunately I need something that is more simple, I can't care less about effects, really. If you got one simple idea, try it out, I'm not going to judge after who made coolest effects, it's about the best idea and uniqueness.
This one is my favorite so far.

The only thing I would like you to remove is the text underneath it. Maybe add something else there instead!
Also one thing; it can also be only the symbols of the four aces, just like ilakons, it does not have to be the four cards.