Cheapest priced copy (New Phyrexia): $0.35 at Card Kingdom, near mint, their price list as of .
Mycosynth Fiend 
Creature — Phyrexian Horror · 2/2 · Uncommon · Phyrexia: All Will Be One Commander · #109
This creature gets +1/+1 for each poison counter your opponents have.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| New Phyrexia | 117 | Uncommon | $0.35 | $0.99 |
| Phyrexia: All Will Be One Commander | 109 | Uncommon | $0.35 | — |