Scouring Swarm is a rare Creature — Insect card from Edge of Eternities Commander (EOC), collector number 36. Current market price: $0.34, TCGplayer market prices via Scryfall.
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.