Is Strength-Testing Hammer legal in Standard, Modern, and Commander?

Strength-Testing Hammer is legal in: Legacy, Vintage, Commander.

Strength-Testing Hammer

Q: What type of card is Strength-Testing Hammer?

Strength-Testing Hammer is an Artifact — Equipment. Its oracle text reads: "Whenever equipped creature attacks, roll a six-sided die. That creature gets +X/+0 until end of turn, where X is the result. Then if it has the greatest power or is tied for greatest power among creatures on the battlefield, draw a card. Equip {3} *"I don't know you, but that hammer rings a bell."*"

Artifact — Equipment

Whenever equipped creature attacks, roll a six-sided die. That creature gets +X/+0 until end of turn, where X is the result. Then if it has the greatest power or is tied for greatest power among creatures on the battlefield, draw a card.

Equip