Monk, Uncommon, 10g,10r
Attack: 10+5N, N=# of non-attack cards in enemy hand.
So against some decks, this card could realistically deal 50 damage? Since wall- and tower- cards aren't Attack cards, this would obliterate more than a few decks.
For its cost and rarity, I don't think it should be able to hit for any more than 30, maximum.