Yu Gi Oh banned card that you probably didn't know about. Mass Driver, a Continuous Spell card with the effect 'Tribute 1 monster on your side of the field to inflict 400 points of damage to your opponent's Life Points.' But why is this simple card so powerful that it got banned? First, it can be activated as many times as you want in the same turn. 'Oh, but I would need to tribute a lot of monsters to get a good result with it.' And you can! For example, with a combo using Substitoad,...