Is The Horus Heresy legal in Standard, Modern, and Commander?

The Horus Heresy is legal in: Legacy, Vintage, Commander.

The Horus Heresy

Q: What type of card is The Horus Heresy?

The Horus Heresy is an Enchantment — Saga. Its oracle text reads: "(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — For each opponent, gain control of up to one target nonlegendary creature that player controls for as long as this Saga remains on the battlefield. II — Draw a card for each creature you control but don't own. III — Starting with you, each player chooses a creature. Destroy each creature chosen this way."

Enchantment — Saga

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I — For each opponent, gain control of up to one target nonlegendary creature that player controls for as long as this Saga remains on the battlefield.

II — Draw a card for each creature you control but don't own.

III — Starting with you, each player chooses a creature. Destroy each creature chosen this way.

Set Warhammer 40,000 Commander

Rarity Rare

Mana Value 6

Artist Roman Tishenin

Collector # 126

Scryfall Gatherer