Necropede is a uncommon Artifact Creature — Phyrexian Insect card from Scars of Mirrodin (SOM), collector number 185. Current market price: $0.43 (foil $6.45), TCGplayer market prices via Scryfall.
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) When this creature dies, you may put a -1/-1 counter on target creature.