Memory Deluge - Promo Pack (PMID) from Innistrad: Midnight Hunt, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Lake Hurwitz
• Card Text:
  Look at the top X cards of your library, where X is the amount of mana spent to cast this spell. Put two of them into your hand and the rest on the bottom of your library in a random order.
  Flashback 5UU (You may cast this card from your graveyard for its flashback cost. Then Exile it.)