Cheapest priced copy (Avatar: The Last Airbender): $0.35 at Card Kingdom, near mint, their price list as of .
Swampsnare Trap 
Enchantment — Aura · Common · Avatar: The Last Airbender · #120
This spell costs {1} less to cast if it targets a creature with flying.
Enchant creature
Enchanted creature gets -5/-3.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Avatar: The Last Airbender | 120 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 2 October 2025To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Swampsnare Trap). The mana value of the spell is determined only by its mana cost, no matter what the total cost to cast that spell was.