The "Masked Knights" are LV Monsters who can inflict effect damage to the user's opponent by forfeiting their attack. The higher the Level of the "Masked Knight", the more effect damage it does. The highest Level "Masked Knight", "Masked Knight LV7", can both do effect damage and attack in the same turn. The "Masked Knights" also have a monster effect that allows them to be Tributed to summon a higher level "Masked Knight".
This article is a stub. You can help the Yu-Gi-Oh! Wikia by expanding it.