Viral Drake is a uncommon Creature — Phyrexian Drake card from The List (PLST), collector number NPH-49. Current market price: $0.64, TCGplayer market prices via Scryfall.
Flying Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) {3}{U}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)