Cheapest priced copy (Throne of Eldraine): $0.49 at Card Kingdom, near mint, their price list as of .
Heraldic Banner 
Artifact · Uncommon · Foundations · #254
As this artifact enters, choose a color.
Creatures you control of the chosen color get +1/+0.
{T}: Add one mana of the chosen color.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
5 printings · $0.49 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Throne of Eldraine | 222 | Uncommon | $0.49 | $0.99Out of stock |
| Foundations Commander | 263 | Uncommon | $0.49 | — |
| Foundations | 254 | Uncommon | $0.49 | $0.79 |
| The List | ELD-222 | Uncommon | $0.49 | — |
| Starter Commander Decks | 267 | Uncommon | $0.49 | — |
2 rulings from Wizards of the Coast
- 4 October 2019If there is somehow no chosen color, Heraldic Banner's static ability has no effect, and its mana ability produces no mana if you activate it. Colorless creatures won't get +1/+0, and you won't add {C}.
- 4 October 2019You must choose white, blue, black, red, or green for Heraldic Banner's ability. You can't choose "multicolor," "gold," or "colorless."