Cheapest priced copy (Innistrad): $0.35 at Card Kingdom, near mint, their price list as of .
Spare from Evil 
Instant · Common · Innistrad · #34
Creatures you control gain protection from non-Human creatures until end of turn.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad | 34 | Common | $0.35 | $0.79 |
2 rulings from Wizards of the Coast
- 22 September 2011A "non-Human creature" is any creature that doesn't have the creature type Human. A creature that is a Human in addition to other creature types is not a non-Human creature.
- 22 September 2011Only creatures you control when Spare from Evil resolves will be affected. Creatures that enter or that you gain control of later in the turn won't be.