Cheapest priced copy (War of the Spark): $0.35 at Card Kingdom, near mint, their price list as of .
Sky Theater Strix 
Creature — Bird · 1/2 · Common · War of the Spark · #67
Flying
Whenever you cast a noncreature spell, this creature gets +1/+0 until end of turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| War of the Spark | 67 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 3 May 2019Sky Theater Strix’s last ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered.