Card Errata:Kaiser Colosseum

New Card Lore: If there is 1 or more monster(s) on the field of the controller of this card, his/her opponent cannot place a monster on the field if his/her number of monsters would exceed the number of monsters that are on the field of this card's controller. The cards that are already on the field before this card's activation are unaffected by this effect.

Old Card Lore: When there is 1 or more monsters on the field of the controller of this card, his/her opponent cannot place a monster on the field if the opponent would then have more monsters on the field than the controller of this card.