Is Salvation Colossus legal in Standard, Modern, and Commander?

Salvation Colossus is legal in: Legacy, Vintage, Commander.

What type of card is Salvation Colossus?

Salvation Colossus is an Artifact Creature — Construct. Its oracle text reads: "Flying, vigilance, trample Whenever you attack, other creatures you control get +2/+2 and gain indestructible until end of turn. Unearth—Pay eight {E}. (Pay eight energy counters: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)"

Salvation Colossus

Artifact Creature — Construct

Flying, vigilance, trample

Whenever you attack, other creatures you control get +2/+2 and gain indestructible until end of turn.

Unearth—Pay eight . (Pay eight energy counters: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)