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This is a pretty odd way to divide things, but it is what it is

The most expensive version of the Artifact is a foil variant from Champions of Kamigawa , priced at around $190

Must be Special Summoned (from your hand) by having 4 or more "Lightsworn" monsters with different names in your GY

"Banil" monsters are also treated as that attribute while this card is face-up on the field

I don't believe this card had any influence on this mechanic though as I never had an opportunity to show it to anyone because the set got put on hiatus

Serenity only Dueled once, in a three on one Duel with Tristan and Duke against Nezbitt during the Virtual Realm arc