Cheapest priced copy (Commander Legends: Battle for Baldur's Gate): $0.35 at Card Kingdom, near mint, their price list as of .
Band Together 
Instant · Common · War of the Spark · #153
Up to two target creatures you control each deal damage equal to their power to another target creature.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
6 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends: Battle for Baldur's Gate | 216 | Common | $0.35 | $0.49 |
| Ravnica: Clue Edition | 156 | Common | $0.35 | — |
| Jumpstart 2022 | 631 | Common | $0.35 | — |
| Foundations Jumpstart | 634 | Common | $0.35 | — |
| Ravnica Remastered | 132 | Common | $0.35 | $0.49 |
| War of the Spark | 153 | Common | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 3 May 2019If the last target creature is an illegal target as Band Together resolves, or if both of the first targets are illegal targets, no creature deals or is dealt damage.
- 3 May 2019If one of the two target creatures you control is an illegal target as Band Together resolves, the other will still deal damage equal to its power.