If you used Union Attack, you can't do damage. In order to use Union attack you have to use gravekeepers vassal cuz it turns the damage into effect damage. Union attack nullifies all battle damage done to a player
when you lucky enough, the maximum damage that can be dealt is 65535. i already try it (when not farming Kaiba of course). i did hit 80k attack point with union combo + spell reclamation.
Is this coded in, or just the maximum you've seen or dealt yourself?
It's possible to make a duel last forever, with Localised Tornado and Foolish Return, which allows you to infinately stack Piercing Moray or Legendary Fiend
Yeah but if duels in duel links go longer than 30 turns (as in each player gets 30 turns) than the duel auto ends in a tie. Source: I tied a duel against a player who discarded his sword of deep seated when he had max cards. I was using a deep seated balloons deck.