Sparkhunter Masticore - Promo Pack (PM21) from Core Set 2021, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Randy Vargas
• Card Text:
  As an additional cost to cast this spell, discard a card.
  Protection from planeswalkers
  1: Sparkhunter Masticore deals 1 damage to target planeswalker.
  3: Sparkhunter Masticore gains indestructible until end of turn.