Bolas's Citadel (MB2) #39 [EN/N] s/o

{3}{B}{B}{B} · Legendary Artifact · 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. · Illustrated by Jonas De Ro · Mystery Booster 2 #39 · EDHREC rank 263 · Magic: The Gathering, MTG