Ballista Watcher // Ballista Wielder (DBL) from Innistrad: Double Feature, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Tomas Duchek
• Card Text:
  2R, T: Ballista Watcher deals 1 damage to any target.
  Daybound (If a player casts no spells during their own turn, it becomes night next turn.)
  //
  Ballista Wielder
  2R: Ballista Wielder deals 1 damage to any target. A creature dealt damage this way can't block this turn.
  Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)