Bolas's Citadel 
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.
, Sacrifice ten nonland permanents: Each opponent loses 10 life.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Prints
Final Fantasy: Through the Ages
EN · FCA · 2025-06-13
Magic Online Promos
EN · PRM · 2024-10-05
Mystery Booster 2
EN · MB2 · 2024-08-02
Secret Lair Drop
EN · SLD · 2022-11-28
Love Your LGS 2021
EN · PLG21 · 2021-06-22
Magic Online Promos
EN · PRM · 2019-05-10
War of the Spark Promos
EN · PWAR · 2019-05-03
War of the Spark Promos
EN · PWAR · 2019-05-03
War of the Spark Promos
EN · PWAR · 2019-05-03
War of the Spark
EN · WAR · 2019-05-03