Cheapest priced copy (March of the Machine): $0.99 at Card Kingdom, near mint, their price list as of .
Kroxa and Kunoros 
Legendary Creature — Elder Giant Dog · 6/6 · Mythic · March of the Machine · #245
Vigilance, menace, lifelink
Whenever Kroxa and Kunoros enters or attacks, you may exile five cards from your graveyard. When you do, return target creature card from your graveyard to the battlefield.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.99 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine | 245 | Mythic | $0.99 | $0.99 |
| March of the Machine | 312 | Mythic | $0.99 | $1.99 |
| March of the Machine Promos | 245p | Mythic | $0.99 | $0.99 |
| March of the Machine Promos | 245s | Mythic | — | $1.49 |
One ruling from Wizards of the Coast
- 14 April 2023The last ability of Kroxa and Kunoros triggers and goes on the stack without a target. If you exile five cards from your graveyard, the second “reflexive” triggered ability will trigger. You’ll choose the target creature card for that second ability at that time.