Titans' Nest (Extended Art) [Ikoria: Lair of Behemoths]

Set: Ikoria: Lair of Behemoths Type: Enchantment Rarity: Rare Cost: {1}{B}{G}{U} At the beginning of your upkeep, look at the top card of your library. You may put that card into your graveyard. Exile a card from your graveyard: Add {C}. Spend this mana only to cast a colored spell without {X} in its mana cost.