Cheapest priced copy (Edge of Eternities Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Scouring Swarm 
Creature — Insect · 1/1 · Rare · Edge of Eternities Commander · #36
Flying
Whenever you sacrifice a land, create a tapped token that's a copy of this creature if seven or more land cards are in your graveyard. Otherwise, create a tapped 1/1 black Insect creature token with flying.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Edge of Eternities Commander | 16 | Rare | $0.49 | — |
| Edge of Eternities Commander | 36 | Rare | $0.49 | — |
5 rulings from Wizards of the Coast
- 25 July 2025In the unusual case where Scouring Swarm becomes a copy of something else while its triggered ability is on the stack but before it resolves and seven or more land cards are in your graveyard when the ability resolves, the token will enter as a copy of whatever Scouring Swarm is copying. (Swarms come in many forms.)
- 25 July 2025Scouring Swarm’s last ability counts the number of land cards in your graveyard as it resolves. This will usually include the land you sacrificed.
- 25 July 2025If Scouring Swarm leaves the battlefield before its triggered ability resolves and seven or more land cards are in your graveyard when the ability resolves, the token will still enter as a copy of Scouring Swarm, using Scouring Swarm’s copiable values from when it was last on the battlefield.
- 25 July 2025The token doesn’t copy whether Scouring Swarm is tapped or untapped, whether it has any counters on it or Auras or Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on.
- 25 July 2025The token copy will have Scouring Swarm’s abilities and will be able to create more copies of itself.