Cheapest priced copy (Throne of Eldraine): $0.49 at Card Kingdom, near mint, their price list as of .
Acclaimed Contender 
Creature — Human Knight · 3/3 · Rare · Throne of Eldraine · #334
When this creature enters, if you control another Knight, look at the top five cards of your library. You may reveal a Knight, Aura, Equipment, or legendary artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Throne of Eldraine | 1 | Rare | $0.49 | $0.79 |
| Throne of Eldraine | 334 | Rare | $1.49 | $2.99 |
| March of the Machine Commander | 166 | Rare | $0.49 | — |
| Throne of Eldraine Promos | 1p | Rare | $0.69 | $0.79 |
| Throne of Eldraine Promos | 1s | Rare | — | $1.99Out of stock |
2 rulings from Wizards of the Coast
- 4 October 2019Acclaimed Contender's ability can get you at most one card from the top five cards, no matter how many other Knights you control.
- 4 October 2019Acclaimed Contender's ability won't trigger if you don't control another Knight immediately after it enters the battlefield. If you don't control another Knight as that ability resolves, the ability has no effect. This doesn't have the be the same Knight at both times, however.