Bolas's Citadel [War of the Spark] Kaladesh Set: Tempest Type: Artifact Rarity:

Set: Tempest Type: Artifact Rarity: Rare Cost: {2} Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power

If the player doesn't discard a card this way

Set: Friday Night Magic 2000 Type: Creature — Snake Rarity: Rare Cost: {1}{G} Islandwalk (This creature can't be blocked as long as defending player controls an Island

and Sagas are historic

Bolas's Citadel [War of the Spark] Kaladesh Set: Tempest Type: Artifact Rarity:Set: War of the Spark Type: Legendary Artifact Rarity: Rare Cost: {3}{B}{B}{B} 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.