Is Plague Stinger legal in Standard, Modern, and Commander?

Plague Stinger is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Plague Stinger

Q: What type of card is Plague Stinger?

Plague Stinger is a Creature — Phyrexian Insect Horror. Its oracle text reads: "Flying Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) *It leaves its victims one sting closer to phyresis.* Power/Toughness: 1/1"