Trinisphere [Darksteel] Frog Guest Set: Guilds of Ravnica Type:

Set: Guilds of Ravnica Type: Creature — Human Rogue Rarity: Common Cost: {1}{U/B}{U/B} Flash

Set: Dominaria United Commander Type: Land Rarity: Rare Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain

Set: Oversize Cards Rarity: Rare Remove target creature from the game

Those who don't learn from their deaths are destined to repeat them

Whenever an opponent casts an instant or sorcery spell

Trinisphere [Darksteel] Frog Guest Set: Guilds of Ravnica Type:Set: Darksteel Type: Artifact Rarity: Rare Cost: {3} As long as Trinisphere is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost {1}{B} to cast costs {2}{B} to cast instead.)