Cheapest priced copy (Time Spiral Remastered): $0.35 at Card Kingdom, near mint, their price list as of .
Firewake Sliver 
Creature — Sliver · 1/1 · Uncommon · Time Spiral · #238
All Sliver creatures have haste.
All Slivers have "{1}, Sacrifice this permanent: Target Sliver creature gets +2/+2 until end of turn."
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Masters | 923 | Uncommon | $0.59 | — |
| Time Spiral | 238 | Uncommon | $0.49 | $2.99 |
| Time Spiral Remastered | 252 | Uncommon | $0.35 | $2.49 |
2 rulings from Wizards of the Coast
- 1 July 2013Abilities that Slivers grant, as well as power/toughness boosts, are cumulative. However, for some abilities, like flying, having more than one instance of the ability doesn't provide any additional benefit.
- 1 July 2013If the creature type of a Sliver changes so it's no longer a Sliver, it will no longer be affected by its own ability. Its ability will continue to affect other Sliver creatures.