FOILCheapest priced copy (Time Spiral): $1.29 at Card Kingdom, near mint, their price list as of .
Opaline Sliver 
Creature — Sliver · 2/2 · Rare · Secret Lair Drop · #667
All Slivers have "Whenever this permanent becomes the target of a spell an opponent controls, you may draw a card."
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $1.29 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Secret Lair Drop | 667 | Rare | — | $2.29 |
| Time Spiral | 244 | Uncommon | $1.29 | $4.49 |
2 rulings from Wizards of the Coast
- 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.
- 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.