Cheapest priced copy (Modern Horizons): $0.35 at Card Kingdom, near mint, their price list as of .
Sadistic Obsession 
Enchantment — Aura · Uncommon · Modern Horizons · #105
Enchant creature
Enchanted creature has "{B}, {T}: Put a -1/-1 counter on target creature."
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons | 105 | Uncommon | $0.35 | $0.49 |