Cheapest priced copy (Magic 2014): $0.35 at Card Kingdom, near mint, their price list as of .
Battle Sliver 
Creature — Sliver · 3/3 · Uncommon · Magic 2014 · #128
Sliver creatures you control get +2/+0.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2014 | 128 | Uncommon | $0.35 | $0.99 |
2 rulings from Wizards of the Coast
- 1 July 2013If you change the creature type of a Sliver you control 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 you control.
- 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.