Is T-45 Power Armor legal in Standard, Modern, and Commander?

T-45 Power Armor is legal in: Legacy, Vintage, Commander.

T-45 Power Armor

Q: What type of card is T-45 Power Armor?

T-45 Power Armor is an Artifact — Equipment. Its oracle text reads: "When this Equipment enters, you get {E}{E} (two energy counters). Equipped creature gets +3/+3 and doesn't untap during its controller's untap step. At the beginning of your upkeep, you may pay {E}. If you do, untap equipped creature, then put your choice of a menace, trample, or lifelink counter on it. Equip {3}"

Artifact — Equipment

When this Equipment enters, you get (two energy counters).

Equipped creature gets +3/+3 and doesn't untap during its controller's untap step.

At the beginning of your upkeep, you may pay . If you do, untap equipped creature, then put your choice of a menace, trample, or lifelink counter on it.

Equip