Cheapest priced copy (Mirrodin Besieged): $0.35 at Card Kingdom, near mint, their price list as of .
Rusted Slasher 
Artifact Creature — Phyrexian Horror · 4/1 · Common · Mirrodin Besieged · #128
Sacrifice an artifact: Regenerate this creature.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mirrodin Besieged | 128 | Common | $0.35 | $0.79 |
One ruling from Wizards of the Coast
- 1 June 2011You may sacrifice Rusted Slasher to pay for its own regeneration ability. If you do, however, it won’t regenerate. It’ll just end up in its owner’s graveyard as a result of the sacrifice.