Cheapest priced copy (Phyrexia: All Will Be One): $0.35 at Card Kingdom, near mint, their price list as of .
Barbed Batterfist 
Artifact — Equipment · Common · Phyrexia: All Will Be One · #121
For Mirrodin! (When this Equipment enters, create a 2/2 red Rebel creature token, then attach this to it.)
Equipped creature gets +1/-1.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Phyrexia: All Will Be One | 121 | Common | $0.35 | $0.49 |
| The List | ONE-121 | Common | $0.35 | — |
3 rulings from Wizards of the Coast
- 4 February 2023If the Rebel is destroyed, the Equipment stays on the battlefield. Similarly, you may pay its equip cost to move it from the Rebel token to another creature you control.
- 4 February 2023If the ability causes two Rebel tokens to be created (due to an effect such as that of Mondrak, Glory Dominus), the Equipment becomes attached to only one of them.
- 4 February 2023The Rebel enters the battlefield as a 2/2 creature, then the Equipment becomes attached to it. Abilities that trigger when a creature enters the battlefield see that a 2/2 creature entered the battlefield.