Cheapest priced copy (New Phyrexia): $0.35 at Card Kingdom, near mint, their price list as of .
Chained Throatseeker 
Creature — Phyrexian Horror · 5/5 · Common · New Phyrexia · #30
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
This creature can't attack unless defending player is poisoned.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| New Phyrexia | 30 | Common | $0.35 | $1.49 |
One ruling from Wizards of the Coast
- 1 June 2011A player is poisoned if that player has one or more poison counters.