The Magic Mirror (ELD) from Throne of Eldraine, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Anastasia Ovchinnikova
• Card Text:
  This spell costs 1 less to cast for each instant and sorcery card in your graveyard.
  You have no maximum hand size.
  At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror.