Titans' Nest - Ikoria: Lair of Behemoths - 212

Enchantment

Mana Cost: {1}{B}{G}{U}

At the beginning of your upkeep, surveil 1. (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 spell that's one or more colors without {X} in its mana cost.

Rare · Ikoria: Lair of Behemoths · #212 (IKO)

Illustrated by Cliff Childs