Cheapest priced copy (Wilds of Eldraine): $0.49 at Card Kingdom, near mint, their price list as of .
Voracious Vermin 
Creature — Rat · 2/1 · Common · Wilds of Eldraine · #116
When this creature enters, create a 1/1 black Rat creature token with "This token can't block."
Whenever another creature you control dies, put a +1/+1 counter on this creature.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Wilds of Eldraine | 116 | Common | $0.49 | $0.49 |