Is Uchbenbak, the Great Mistake legal in Standard, Modern, and Commander?

Uchbenbak, the Great Mistake is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Uchbenbak, the Great Mistake

Q: What type of card is Uchbenbak, the Great Mistake?

Uchbenbak, the Great Mistake is a Legendary Creature — Skeleton Horror. Its oracle text reads: "Vigilance, menace Descend 8 — {4}{U}{B}: Return this card from your graveyard to the battlefield with a finality counter on it. Activate only if there are eight or more permanent cards in your graveyard and only as a sorcery. (If a creature with a finality counter on it would die, exile it instead.) Power/Toughness: 6/4"

Legendary Creature — Skeleton Horror

Vigilance, menace

Descend 8 — : Return this card from your graveyard to the battlefield with a finality counter on it. Activate only if there are eight or more permanent cards in your graveyard and only as a sorcery. (If a creature with a finality counter on it would die, exile it instead.)