Is Contagion legal in Standard, Modern, and Commander?

Contagion is legal in: Legacy, Vintage, Commander.

Contagion

Q: What type of card is Contagion?

Contagion is an Instant. Its oracle text reads: "You may pay 1 life and exile a black card from your hand rather than pay this spell's mana cost.Distribute two -2/-1 counters among one or two target creatures."

Instant

You may pay 1 life and exile a black card from your hand rather than pay this spell's mana cost.<br>Distribute two -2/-1 counters among one or two target creatures.

Set Alliances

Rarity Uncommon

Artist Mike Raabe