Cheapest priced copy (Eternal Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Plague Witch 
Creature — Elf Spellshaper · 1/1 · Common · Nemesis · #66
{B}, {T}, Discard a card: Target creature gets -1/-1 until end of turn.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
2 printings · $0.35 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eternal Masters | 103 | Common | $0.35 | $0.49 |
| Nemesis | 66 | Common | $0.35 | $3.99 |