Bolas's Citadel [War of the Spark Promos] Pro Tour Promos and you may spend mana

and you may spend mana as though it were mana of any type to cast those spells

Set: Legends Type: Legendary Land Uncommon Cost: {T}: Add {R}

Set: Classic Sixth Edition Type: Artifact Rare Cost: {4} At the beginning of each player's draw step

Creatures your opponents control get -2/-2

−3: Exile target permanent

Bolas's Citadel [War of the Spark Promos] Pro Tour Promos and you may spend manaSet: War of the Spark Promos Type: Legendary Artifact Rare Cost: {3}{B}{B}{B} 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.