Card game stuff

So I'm making a card game. I've pretty much got the design down for the creature cards, except I still need a way to denote a cards rarity (common/uncommon/rare).
So I was talking to Anna about it and I think she came up with a neat idea.


"Griffon:  I need to come up with a way to denote card rarity
I like circle-diamond-star but thats a pokemon thing
I like color of expansion symbol but thats a magic thing
I cant do shininess like yugioh

Anna:  LITTLE FACES
There could be a
A
and a
For common, un common and rare respectively."

So thats what I'm doing now.
The card game is in EXTREME BETA version right now. Mostly because only 4 cards have been designed so far, and they're all creatures. If you wanna see a card, click here > shapelyman.deviantart.com/art/…
thats only a test card you it gives you the idea of the card layout.