Cheapest priced copy (Ravnica: Clue Edition): $0.69 at Card Kingdom, near mint, their price list as of .
Duskshell Crawler 
Creature — Insect · 0/3 · Common · Final Fantasy Commander · #301
When this creature enters, put a +1/+1 counter on target creature.
Each creature you control with a +1/+1 counter on it has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
5 printings · $0.69 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica: Clue Edition | 161 | Common | $0.69 | — |
| Final Fantasy Commander | 301 | Common | $0.79 | $1.49 |
| Jumpstart 2022 | 650 | Common | $0.99 | — |
| Foundations Jumpstart | 653 | Common | $0.69 | — |
| Modern Horizons 2 | 156 | Common | $0.69 | $0.79 |