Cheapest priced copy (Scars of Mirrodin): $0.35 at Card Kingdom, near mint, their price list as of .
Sylvok Lifestaff 
Artifact — Equipment · Common · Scars of Mirrodin · #209
Equipped creature gets +1/+0.
Whenever equipped creature dies, you gain 3 life.
Equip {1}
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $4.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Scars of Mirrodin | 209 | Common | $0.35 | $4.99 |
One ruling from Wizards of the Coast
- 1 January 2011If Sylvok Lifestaff and the equipped creature are put into their owners’ graveyards at the same time (due to Planar Cleansing, perhaps), the triggered ability will still trigger. You’ll gain 3 life.