Bolas's Citadel - War of the Spark (WAR)

You may look at the top card of your library any time.
You may play the top card of your library. If you cast a spell this way, pay life equal to its converted mana cost rather than pay its mana cost.
T, Sacrifice ten nonland permanents: Each opponent loses 10 life.

• Rarity: Rare
• #: 79
• Card Type: Legendary Artifact
• Casting Cost: {3}{B}{B}{B}