I hate to be the resident stick-in-the-mud, but MUST we use only a Magic: The Gathering format? I've never played it, but I've played Pokemon AND Yu-Gi-Oh!. So, I'm pretty much clueless...
For example...
...?
I have no clue what that means... Now, in Yu-Gi-Oh! terms...
Name: Weasel Overlord
Attribute: EARTH
Type: Beast-Warrior
Level: 5
ATK: 2100
DEF: 1300
Image: (insert pic of Weas that I was too lazy to go get myself here)
Effect: This Monster's effect can only be used during your Main Phase 1. Select one face-up Monster on your side of the field and one face-up Monster on your opponent's side of the field and flip them into face-down Defense Mode. Neither selected Monster can switch modes or be flipped face-up until the end of your opponents next turn.
THAT I can understand. Even Pokemon terms is fine by me...
Name: Weasel Overlord
Type: Basic Fighting (evolves into Stage-1 Fighting 'Yaoi Dominatrix')
LV: 36
Card No.: 003
Retreat Cost: CC
Weakness: F
Reistance: L (-30)
Attacks:
-FC: Modstick 20 (Don't apply Weakness or Resistance for this attack.)
-FFL: Tazor 30 (Flip 2 coins; if both are heads, add 1 Trainer Card from your discard pile to your hand. If one is heads, the Defending Pokemon is now Paralyzed. If neither are heads, this Pokemon does 10 damage to itself.)
See? I just think it'd be easier if there were different variations of the game so everybody can join in.