Heraldic Banner (ELD) from Throne of Eldraine, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Ravenna Tran
• Card Text:
  As Heraldic Banner enters the battlefield, choose a color.
  Creatures you control of the chosen color get +1/+0.
  T: Add one mana of the chosen color.