Cheapest priced copy (Masters 25): $0.35 at Card Kingdom, near mint, their price list as of .
Epic Confrontation 
Sorcery · Common · The Brothers' War · #176
Target creature you control gets +1/+2 until end of turn. It fights target creature you don't control. (Each deals damage equal to its power to the other.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
4 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Masters 25 | 170 | Common | $0.35 | $0.49 |
| The Brothers' War | 176 | Common | $0.35 | $0.49 |
| Dragons of Tarkir | 185 | Common | $0.35 | $0.49 |
| The List | DTK-185 | Common | $0.35 | — |
4 rulings from Wizards of the Coast
- 16 March 2018You can't cast Epic Confrontation unless you choose both a creature you control and a creature you don't control as targets.
- 16 March 2018If the creature you control is an illegal target as Epic Confrontation tries to resolve, the creature you control won't get +1/+2. If that creature is a legal target but the creature you don't control isn't, your creature will still get +1/+2. In both cases, neither creature will deal or be dealt damage.
- 14 October 2022You can't cast Epic Confrontation unless you choose both a creature you control and a creature you don't control as targets.
- 14 October 2022If the creature you control is an illegal target as Epic Confrontation tries to resolve, the creature you control won't get +1/+2. If that creature is a legal target but the creature you don't control isn't, your creature will still get +1/+2. In both cases, neither creature will deal or be dealt damage.