Virulent Sliver is a rare Creature — Sliver card from Secret Lair Drop (SLD), collector number 659. Current market price: — (foil $4.48), TCGplayer market prices via Scryfall.
All Sliver creatures have poisonous 1. (Whenever a Sliver deals combat damage to a player, that player gets a poison counter. A player with ten or more poison counters loses the game.)