Academy Ruins [Modern Masters] Nightmare Demon Set: EX: Crystal Guardians Type:

Set: EX: Crystal Guardians Type: Fighting Rarity: Ultra Rare Retreat cost: Colorless

Set: Crossroads of Chaos Card type: Synchro/Effect Monster Rarity: Ultimate Rare Attack: 2400 Defense: 1800 1 Tuner + 1 or more non-Tuner monsters When this card is Synchro Summoned

This card cannot be Special Summoned except by the effect of "Knight's Title"

Each of the revealed cards' {CHAOS} abilities triggers

Kaldheim Collector Boosters contain:

Academy Ruins [Modern Masters] Nightmare Demon Set: EX: Crystal Guardians Type:Set: Modern Masters Type: Legendary Land Rarity: Rare {T}: Add {C}. {1}{U}, {T}: Put target artifact card from your graveyard on top of your library. Its secrets once wrought the greatest artifice ever known. Now crabs loot the rubble to decorate their shells.