Cheapest priced copy (The List): $1.29 at Card Kingdom, near mint, their price list as of .
Toxin Sliver 
Creature — Sliver · 3/3 · Rare · Legions · #84
Whenever a Sliver deals combat damage to a creature, destroy that creature. It can't be regenerated.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
5 printings · $1.29 to $44.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Legions | 84 | Rare | $1.99 | $44.99 |
| The List | LGN-84 | Rare | $1.29 | — |
| Salvat 2005 | D25 | Rare | — | — |
| Secret Lair Drop | 635 | Rare | — | $1.49 |
| Secret Lair Drop | 635Φ | Rare | — | $23.99 |
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.