Infected Vermin is a uncommon Creature — Rat card from Odyssey (ODY), collector number 144. Current market price: $0.43 (foil $0.51), TCGplayer market prices via Scryfall.
{2}{B}: This creature deals 1 damage to each creature and each player. Threshold — {3}{B}: This creature deals 3 damage to each creature and each player. Activate only if there are seven or more cards in your graveyard.