Is Demilich legal in Standard, Modern, and Commander?

Demilich is legal in: Modern, Pioneer, Legacy, Vintage, Commander.

Demilich

Q: What type of card is Demilich?

Demilich is a Creature — Skeleton Wizard. Its oracle text reads: "This spell costs {U} less to cast for each instant and sorcery spell you've cast this turn. Whenever this creature attacks, exile up to one target instant or sorcery card from your graveyard. Copy it. You may cast the copy. You may cast this card from your graveyard by exiling four instant and/or sorcery cards from your graveyard in addition to paying its other costs."