Is Titan of Littjara legal in Standard, Modern, and Commander?

Titan of Littjara is legal in: Legacy, Vintage, Commander.

Titan of Littjara

Q: What type of card is Titan of Littjara?

Titan of Littjara is a Creature — Illusion. Its oracle text reads: "As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. Whenever this creature enters or attacks, you may draw a card for each other creature you control that shares a creature type with it. If you do, discard a card."

Creature — Illusion

As this creature enters, choose a creature type.

This creature is the chosen type in addition to its other types.

Whenever this creature enters or attacks, you may draw a card for each other creature you control that shares a creature type with it. If you do, discard a card.

Set Commander Masters

Rarity Rare

Mana Value 6

Artist Aldo Domínguez

Collector # 728

Scryfall Gatherer