Cheapest priced copy (Darksteel): $0.49 at Card Kingdom, near mint, their price list as of .
Mephitic Ooze 
Creature — Ooze · 0/5 · Rare · Darksteel · #47
This creature gets +1/+0 for each artifact you control.
Whenever this creature deals combat damage to a creature, destroy that creature. The creature can't be regenerated.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Darksteel | 47 | Rare | $0.49 | $1.49 |