Huskburster Swarm is a uncommon Creature — Elemental Insect card from Bloomburrow (BLB), collector number 98. Current market price: $0.26 (foil $0.31), TCGplayer market prices via Scryfall.
This spell costs {1} less to cast for each creature card you own in exile and in your graveyard. Menace, deathtouch