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Bolas's Citadel [War of the Spark Promos]
| Set: | War of the Spark Promos |
| Type: | Legendary Artifact |
| Cost: | {3}{B}{B}{B} |
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 converted mana cost rather than pay its mana cost.
{T}, Sacrifice ten nonland permanents: Each opponent loses 10 life.
