Runeforge Champion - Promo Pack (PKHM) from Kaldheim, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Andrey Kuzinskiy
• Card Text:
  When Runeforge Champion enters the battlefield, you may search your library and/or graveyard for a Rune card, reveal it, and put it into your hand. If you search your library this way, shuffle it.
  You may pay 1 rather than pay the mana cost for Rune spells you cast.