Cheapest priced copy (Edge of Eternities): $0.35 at Card Kingdom, near mint, their price list as of .
Kavaron Harrier 
Artifact Creature — Robot Soldier · 2/1 · Uncommon · Edge of Eternities · #139
Whenever this creature attacks, you may pay {2}. If you do, create a 2/2 colorless Robot artifact creature token that's tapped and attacking. Sacrifice that token at end of combat.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Edge of Eternities | 139 | Uncommon | $0.35 | $0.49 |
| Edge of Eternities | 396 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 25 July 2025Although the token you created is put onto the battlefield attacking, it was never declared as an attacking creature. Abilities that trigger whenever a creature attacks won’t trigger when that creature enters attacking.
- 25 July 2025You choose the player, planeswalker, or battle the token is attacking. It doesn’t have to be the same player, planeswalker, or battle that Kavaron Harrier or any other attacking creatures are attacking.