Cagnazzo cannot block Forwards forming a party. When Cagnazzo blocks, dull Cagnazzo. If Cagnazzo is dull, he cannot receive or deal any damage (this includes player damage too).
If Cagnazzo would recieve damage during your opponent's turn, reduce that damage by 4000. When Cagnazzo enters the field, all Forwards opponent controls lose 1000 power for every 2 Water Characters...