Is Agony Warp legal in Standard, Modern, and Commander?

Agony Warp is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Agony Warp

Q: What type of card is Agony Warp?

Agony Warp is an Instant. Its oracle text reads: "Target creature gets -3/-0 until end of turn. Target creature gets -0/-3 until end of turn. *Life's circle has become inverted in Grixis. The same energy is endlessly recycled and becomes more stagnant with each pass.*"