Is Strength of Night legal in Standard, Modern, and Commander?

Strength of Night is legal in: Legacy, Vintage, Commander, Pauper.

Strength of Night

Q: What type of card is Strength of Night?

Strength of Night is an Instant. Its oracle text reads: "Kicker {B} (You may pay an additional {B} as you cast this spell.) Creatures you control get +1/+1 until end of turn. If this spell was kicked, Zombie creatures you control get an additional +2/+2 until end of turn."