RA03-EN023 * Archnemeses Protos * Super Rare * Quarter Century Bonanza RA03-EN013 also banish them during the

also banish them during the End Phase

except "Libromancer Agent"

you can also use that monster your opponent controls as material

You can only Special Summon "Mementotlan-Horned Dragon" once per turn this way

RA03-EN023 * Archnemeses Protos * Super Rare * Quarter Century Bonanza RA03-EN013 also banish them during theCannot be Normal Summoned Set. Must first be Special Summoned (from your hand) by banishing 3 monsters with different Attributes from your GY and or face up field. Cannot be destroyed by card effects. You can declare 1 monster Attribute on the field; destroy all monsters on the field with that Attribute, also until the end of the next turn, neither player can Special Summon monsters with that Attribute. You can only use this effect of "Archnemeses