City of Brass [Modern Masters] Warrior/Xyz/Effect You can only use this

You can only use this effect of "Marincess Sea Horse" once per turn

Set: Platinum: Base Set Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

also their effects are negated

If a "Toon World(s)" you control would be destroyed by card effect

Set: Miscellaneous Cards Type: Lightning Rarity: Common Retreat cost: Colorless

City of Brass [Modern Masters] Warrior/Xyz/Effect You can only use thisSet: Modern Masters Type: Land Rarity: Rare Whenever City of Brass becomes tapped, it deals 1 damage to you. {T}: Add one mana of any color. "There is much to learn here, but few can endure the ringing of the spires." Nulakam the Archivist