Is Heavyweight Demolisher legal in Standard, Modern, and Commander?

Heavyweight Demolisher is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Heavyweight Demolisher?

Heavyweight Demolisher is an Artifact Creature — Construct. Its oracle text reads: "Menace At the beginning of your upkeep, tap this creature unless you pay {3}. Unearth {6}{R}{R} ({6}{R}{R}: 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.)"

Heavyweight Demolisher

Artifact Creature — Construct

Menace

At the beginning of your upkeep, tap this creature unless you pay .

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.)