Homing Sliver is a rare Creature — Sliver card from Secret Lair Drop (SLD), collector number 640. Current market price: — (foil $3.07), TCGplayer market prices via Scryfall.
Each Sliver card in each player's hand has slivercycling {3}. Slivercycling {3} ({3}, Discard this card: Search your library for a Sliver card, reveal it, put it into your hand, then shuffle.)