Cheapest priced copy (Marvel Super Heroes Commander): $0.35 at Card Kingdom, near mint, their price list as of .
Swarm, Being of Bees 
Legendary Creature — Insect Villain · 2/2 · Common · Marvel's Spider-Man · #69
Flash
Flying
Mayhem {B} (You may cast this card from your graveyard for {B} if you discarded it this turn. Timing rules still apply.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes Commander | 799 | Common | $0.35 | $0.49 |
| Marvel's Spider-Man | 69 | Common | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 19 September 2025You must follow all normal timing rules when casting a spell with mayhem. For example, you can't cast a creature card with mayhem you couldn't normally cast during an opponent's turn, even if you discard that card during an opponent's turn.
- 19 September 2025Mayhem represents an alternative cost that can be paid to cast a spell from your graveyard if you discarded the card with mayhem that turn. You must pay any additional costs the spell has.