Is Canoptek Tomb Sentinel legal in Standard, Modern, and Commander?

Canoptek Tomb Sentinel is legal in: Legacy, Vintage, Commander.

What type of card is Canoptek Tomb Sentinel?

Canoptek Tomb Sentinel is an Artifact Creature — Insect. Its oracle text reads: "Vigilance Exile Cannon — When this creature enters from a graveyard, exile up to one target nonland permanent. Unearth {7} ({7}: 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.)"

Canoptek Tomb Sentinel

Artifact Creature — Insect

Vigilance

Exile Cannon — When this creature enters from a graveyard, exile up to one target nonland permanent.

Unearth (: 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.)