Cheapest priced copy (Tempest): $0.39 at Card Kingdom, near mint, their price list as of .
Metallic Sliver 
Artifact Creature — Sliver · 1/1 · Common · Tempest · #297
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
3 printings · $0.39 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Premium Deck Series: Slivers | 1 | Common | — | $0.49 |
| Tempest | 297 | Common | $0.39 | — |
| Time Spiral Remastered Tokens | 15 | Common | $0.49 | — |
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.