Is Helm of Chatzuk legal in Standard, Modern, and Commander?

Helm of Chatzuk is legal in: Legacy, Vintage, Commander.

Helm of Chatzuk

Q: What type of card is Helm of Chatzuk?

Helm of Chatzuk is an Artifact. Its oracle text reads: "{1}, {T}: Target creature gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)"

Artifact

, : Target creature gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)