Fiery Impulse (ORI) from Magic Origins, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Daarken
• Card Text:
  Fiery Impulse deals 2 damage to target creature.
  Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, Fiery Impulse deals 3 damage to that creature instead.