Is Shilgengar, Sire of Famine legal in Standard, Modern, and Commander?

Shilgengar, Sire of Famine is legal in: Modern, Legacy, Vintage, Commander, Historic.

What type of card is Shilgengar, Sire of Famine?

Shilgengar, Sire of Famine is a Legendary Creature — Elder Demon. Its oracle text reads: "Flying Sacrifice another creature: Create a Blood token. If you sacrificed an Angel this way, create a number of Blood tokens equal to its toughness instead. {W/B}{W/B}{W/B}, Sacrifice six Blood tokens: Return each creature card from your graveyard to the battlefield with a finality counter on it. Those creatures are Vampires in addition to their other types."

Shilgengar, Sire of Famine

Legendary Creature — Elder Demon

Flying

Sacrifice another creature: Create a Blood token. If you sacrificed an Angel this way, create a number of Blood tokens equal to its toughness instead.

, Sacrifice six Blood tokens: Return each creature card from your graveyard to the battlefield with a finality counter on it. Those creatures are Vampires in addition to their other types.