Cheapest priced copy (Mirage): $0.35 at Card Kingdom, near mint, their price list as of .
Superior Numbers 
Sorcery · Uncommon · Mirage · #244
Superior Numbers deals damage to target creature equal to the number of creatures you control in excess of the number of creatures target opponent controls.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mirage | 244 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 1 August 2008As you cast this, you target a creature and an opponent. The opponent does not have to be that creature’s controller.
- 1 August 2008If the creature becomes an illegal target before the spell resolves (but the opponent doesn’t), the spell will be unable to affect that creature. Although the spell will still resolve, it won’t deal any damage.