Bolas's Citadel (White Border) [MB2 - 39]

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

Rarity: Rare

#: 39

Card Type: , Legendary Artifact

Card Color: B

Casting Cost: {3}{B}{B}{B}