Again, wrong section.What's so bad about the Doom Card, "Oh no, I can't use my Bakugan for the rest of the game", that's pretty much it, so nothing bad with it.
the doom Card is not bad for use in the game, in fact it is one of the semi-less not good cards (like Call Of the Defenders is evil) but in the Anime, the Doom Card is pretty bad, but In the bakugan game that is played in the US, there are absolutely NO cards that are banned, so tell your friends it isn't banned so they can get over it.
IN the anime: Holy crap this card is bad.In RL: It;s crap unless you use it on combo battle and win, leaving your opponent for one Bakugan for the rest of the game.