Is Hedron Blade legal in Standard, Modern, and Commander?

Hedron Blade is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper.

Hedron Blade

Q: What type of card is Hedron Blade?

Hedron Blade is an Artifact — Equipment. Its oracle text reads: "Equipped creature gets +1/+1. Whenever equipped creature becomes blocked by one or more colorless creatures, it gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.) Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)"

Artifact — Equipment

Equipped creature gets +1/+1.

Whenever equipped creature becomes blocked by one or more colorless creatures, it gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.)

Equip (: Attach to target creature you control. Equip only as a sorcery.)