Cheapest priced copy (Shadows over Innistrad): $0.35 at Card Kingdom, near mint, their price list as of .
Silburlind Snapper 
Creature — Turtle · 6/6 · Common · Shadows over Innistrad · #85
This creature can't attack unless you've cast a noncreature spell this turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shadows over Innistrad | 85 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 8 April 2016It doesn’t matter whether the noncreature spell resolved or was countered, as long as it was cast.