Cheapest priced copy (Tarkir: Dragonstorm): $0.39 at Card Kingdom, near mint, their price list as of .
Dalkovan Packbeasts 
Creature — Ox · 0/4 · Uncommon · Tarkir: Dragonstorm · #7
Vigilance
Mobilize 3 (Whenever this creature attacks, create three tapped and attacking 1/1 red Warrior creature tokens. Sacrifice them at the beginning of the next end step.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.39 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The List | TDM-7 | Uncommon | — | — |
| Tarkir: Dragonstorm | 7 | Uncommon | $0.39 | $0.79 |
2 rulings from Wizards of the Coast
- 4 April 2025Although the Warrior tokens enter as attacking creatures, they were never declared as attacking creatures. Abilities that trigger whenever a creature attacks won’t trigger when the tokens enter attacking.
- 4 April 2025You choose the player, planeswalker, or battle each Warrior token is attacking. They don’t all have to attack the same one, and they don’t have to attack the same player, planeswalker, or battle as the creature with mobilize.