Is Knickknack Ouphe legal in Standard, Modern, and Commander?

Knickknack Ouphe is legal in: Legacy, Vintage, Commander.

Knickknack Ouphe

Q: What type of card is Knickknack Ouphe?

Knickknack Ouphe is a Creature — Ouphe. Its oracle text reads: "This creature enters with X +1/+1 counters on it. When this creature enters, reveal the top X cards of your library. You may put any number of Aura cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield on the bottom of your library in a random order."

Creature — Ouphe

This creature enters with X +1/+1 counters on it.

When this creature enters, reveal the top X cards of your library. You may put any number of Aura cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield on the bottom of your library in a random order.

Set Wilds of Eldraine Commander

Rarity Rare

Mana Value 1

Artist Iris Compiet

Collector # 18

Scryfall Gatherer