Is The Capitoline Triad legal in Standard, Modern, and Commander?

The Capitoline Triad is legal in: Modern, Legacy, Vintage, Commander.

The Capitoline Triad

Q: What type of card is The Capitoline Triad?

The Capitoline Triad is a Legendary Creature — God Artificer. Its oracle text reads: "Those Who Came Before — This spell costs {1} less to cast for each historic card in your graveyard. (Artifacts, legendaries, and Sagas are historic.) Exile any number of historic cards from your graveyard with total mana value 30 or greater: You get an emblem with "Creatures you control have base power and toughness 9/9.""

Legendary Creature — God Artificer

Those Who Came Before — This spell costs less to cast for each historic card in your graveyard. (Artifacts, legendaries, and Sagas are historic.)

Exile any number of historic cards from your graveyard with total mana value 30 or greater: You get an emblem with "Creatures you control have base power and toughness 9/9."

Set Assassin's Creed

Rarity Mythic Rare

Mana Value 10

Artist Syd Mills

Collector # 1

Scryfall Gatherer