Contagious Nim is a common Creature — Phyrexian Zombie card from Scars of Mirrodin (SOM), collector number 58. Current market price: $0.23 (foil $1.00), 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.)