Cheapest priced copy (Masters 25): $0.35 at Card Kingdom, near mint, their price list as of .
Pyre Hound 
Creature — Elemental Dog · 2/3 · Common · Shadows over Innistrad · #174
Trample
Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Masters 25 | 145 | Common | $0.35 | $0.49 |
| Shadows over Innistrad | 174 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 16 March 2018Pyre Hound's triggered ability resolves before the spell that caused it to trigger. The ability will resolve even if that spell is countered.