Cheapest priced copy (Double Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Heartless Pillage 
Sorcery · Uncommon · Breaking News · #14
Target opponent discards two cards.
Raid — If you attacked this turn, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Double Masters | 96 | Common | $0.35 | $0.49 |
| Breaking News | 14 | Uncommon | $0.35 | $0.49 |
| Ixalan | 109 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 7 August 2020You create only one Treasure token if you attacked this turn, no matter how many creatures you attacked with beyond the first.
- 7 August 2020If you've attacked with a creature this turn, you'll get a Treasure even if the target opponent discards one or zero cards.