777 for all of them? (that brings you luck.. )
or easier, 77 for each of them?(easier to put it in sales.. )
888 is a good number too.. (in china, 888 means good luck)
or you believe in 13? (sadly you can't sell 13 clintz per card..)
The Urban Rivals team is made by lovers of all kind of Collectibles Cards Games and Trading Cards Games like: Magic the Gathering, Dominion, Vampire, Yu-Gi-Oh!, Pokemon, Wakfu TCG, Assassin Creed Recollection, Shadow Era, Kard Kombat and Might & Magic Duel of Champions.