Is Geological Appraiser legal in Standard, Modern, and Commander?

Geological Appraiser is legal in: Standard, Modern, Legacy, Vintage, Commander. It is banned in: Pioneer.

Geological Appraiser

Q: What type of card is Geological Appraiser?

Geological Appraiser is a Creature — Human Artificer. Its oracle text reads: "When this creature enters, if you cast it, discover 3. (Exile cards from the top of your library until you exile a nonland card with mana value 3 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)"

Creature — Human Artificer

When this creature enters, if you cast it, discover 3. (Exile cards from the top of your library until you exile a nonland card with mana value 3 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Set The Lost Caverns of Ixalan

Rarity Uncommon

Mana Value 4

Artist Alix Branwyn

Collector # 150

Scryfall Gatherer