To give you a bit of a sampling of what I've got, here's two cards which, while unfinished, do have basic stats for both powers and active forms.
Stat Block: same as cat with a few differences: Higher base land speed, Card Powers(ex), etc.
Clow Power: Can cast Expeditious Retreat on Cardcaptor who uses card at will, does not stack...
Sakura Power: Still working on it, either Mass version, MUCH higher speed boost, or maybe both...
Stat Block: Basically the same as Pixie with a few differences: no sleep arrows, Card Powers(ex), etc.
Clow Power: Create Food and Water at will...
Sakura Power: Can cast Heroes' Feast once per day.
What do you think?