Caius the Shadow Monarch [SDDE-EN001] Ultra Rare World Championship Decks 2002 1 Xyz monster that is

1 Xyz monster that is 1 Rank higher than this card

Set: Unlimited Edition Type: Instant Rarity: Uncommon Cost: {G} Cast this spell only during your declare attackers step

Set: International Collectors' Edition Type: Land — Swamp Mountain Rarity: Rare ({T}: Add {B} or {R}

For example

Caius the Shadow Monarch [SDDE-EN001] Ultra Rare World Championship Decks 2002 1 Xyz monster that isSet: Structure Deck: The Dark Emperor Card type: Effect Monster Rarity: Ultra Rare Attack: 2400 Defense: 1000 When this card is Tribute Summoned, remove from play 1 card on the field. If it was a DARK Monster Card, inflict 1000 damage to your opponent.