Is Loyal Inventor legal in Standard, Modern, and Commander?

Loyal Inventor is legal in: Modern, Legacy, Vintage, Commander.

Loyal Inventor

Q: What type of card is Loyal Inventor?

Loyal Inventor is a Creature — Human Artificer. Its oracle text reads: "Vigilance When this creature enters, you may search your library for an artifact card, reveal it, then shuffle. Put that card into your hand if you control an Assassin. Otherwise, put that card on top of your library."

Creature — Human Artificer

Vigilance

When this creature enters, you may search your library for an artifact card, reveal it, then shuffle. Put that card into your hand if you control an Assassin. Otherwise, put that card on top of your library.

Set Assassin's Creed

Rarity Uncommon

Mana Value 3

Artist Gintas Galvanauskas

Collector # 21

Scryfall Gatherer