Vexing Puzzlebox (CLB) from Commander Legends: Battle for Baldur's Gate, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Volkan Baǵa
• Card Text:
  Whenever you roll one or more dice, put a number of charge counters on Vexing Puzzlebox equal to the result.
  T: Add one mana of any color. Roll a d20.
  T, Remove 100 charge counters from Vexing Puzzlebox: Search your library for an artifact card, put that card onto the battlefield, then shuffle.