Cheapest priced copy (Ravnica Allegiance): $0.35 at Card Kingdom, near mint, their price list as of .
Spirit of the Spires 
Creature — Spirit · 2/4 · Uncommon · Ravnica Allegiance · #23
Flying
Other creatures you control with flying get +0/+1.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica Allegiance | 23 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 25 January 2019Because damage remains marked on a creature until it’s removed as the turn ends, nonlethal damage dealt to other creatures you control with flying may become lethal if Spirit of the Spires leaves the battlefield during that turn.