Ancient City - Rainbow Ruins [FOTB-EN045] Ultimate Rare U-ARC218 when an opponent's DARK monster

when an opponent's DARK monster activates its effect: You can detach 1 Xyz Material from this card

Set: Everfest Edition: 1st Edition Finish: Rainbow Foil Type: Action Rarity: Common Class: Brute Roll a 6 sided die

You can only activate 1 "Dimensional Barrier" per turn

Set: Tales of Aria Edition: 1st Edition Finish: Rainbow Foil Type: Action Rarity: Majestic Class: Elemental Guardian Cost: 3 Power: 7 Earth and Ice Fusion (As an additional cost to play Oaken Old

Transfer its materials to the Summoned monster

Ancient City - Rainbow Ruins [FOTB-EN045] Ultimate Rare U-ARC218 when an opponent's DARK monsterSet: Force of the Breaker Card type: Field Spell Rarity: Ultimate Rare This card gets these effects, based on the number of "Crystal Beast" monsters in your Spell & Trap Card Zone. 1+: This card cannot be destroyed by a card effect. 2+: Once per turn, you can halve the Battle Damage you take. 3+: You can send a ""Crystal Beast"" monster you control to the Graveyard to negate the activation of a Spell or Trap Card and destroy it. 4+: Once per turn,