Cheapest priced copy (Commander Legends: Battle for Baldur's Gate): $0.49 at Card Kingdom, near mint, their price list as of .
Bloodsoaked Champion 
Creature — Human Warrior · 2/1 · Rare · Khans of Tarkir · #66
This creature can't block.
Raid — {1}{B}: Return this card from your graveyard to the battlefield. Activate only if you attacked this turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $6.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends: Battle for Baldur's Gate | 740 | Rare | $0.49 | — |
| Khans of Tarkir | 66 | Rare | $0.59 | $3.49 |
| New Capenna Commander | 243 | Rare | $0.49 | — |
| Khans of Tarkir Promos | 66s | Rare | — | $6.49 |
| Secret Lair Drop | 1440 | Rare | — | — |
3 rulings from Wizards of the Coast
- 20 September 2014The activated ability can be activated only if Bloodsoaked Champion is in your graveyard. Notably, if it attacks and then dies later in the turn, you can use its ability to return it to the battlefield, as its attack satisfies its own activation instruction.
- 8 November 2024Raid abilities evaluate the entire turn to see if you attacked with a creature. That creature doesn't have to still be on the battlefield. Similarly, the player, planeswalker, or battle it attacked doesn't have to still be in the game or on the battlefield.
- 8 November 2024Raid abilities care only that you attacked with a creature. It doesn't matter how many creatures you attacked with or which player, planeswalker, or battle those creatures attacked.