Is Seraphic Greatsword legal in Standard, Modern, and Commander?

Seraphic Greatsword is legal in: Legacy, Vintage, Commander.

Seraphic Greatsword

Q: What type of card is Seraphic Greatsword?

Seraphic Greatsword is an Artifact — Equipment. Its oracle text reads: "Equipped creature gets +2/+2. Whenever equipped creature attacks the player with the most life or tied for most life, create a 4/4 white Angel creature token with flying that's tapped and attacking that player. Equip {4} *Light as a feather. Sharp as an angel's wrath.*"

Artifact — Equipment

Equipped creature gets +2/+2.

Whenever equipped creature attacks the player with the most life or tied for most life, create a 4/4 white Angel creature token with flying that's tapped and attacking that player.

Equip