Skull of Ramos [Mercadian Masques] Darkness[-20] You can only use each

You can only use each effect of "Ancient Gear Ballista" once per turn

Set: Starter Deck: Dark Legion Card type: Counter Trap Rarity: Common When an opponent's monster declares an attack: Target the attacking monster

You can only use this effect of "Odd-Eyes Meteorburst Dragon" once per turn

Set: Dominaria Prerelease Promos Type: Land Rarity: Rare Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island

Skull of Ramos [Mercadian Masques] Darkness[-20] You can only use eachSet: Mercadian Masques Type: Artifact Rarity: Rare Cost: {3} {T}: Add {B}. Sacrifice Skull of Ramos: Add {B}. Ramos fell, and there was night.