Is Trained Arynx legal in Standard, Modern, and Commander?

Trained Arynx is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

What type of card is Trained Arynx?

Trained Arynx is a Creature — Cat Beast Mount.

Creature — Cat Beast Mount

Set OTJ

Rarity Common

Mana Value 2

Artist Milivoj Ćeran

Collector # 36

Scryfall Gatherer

Creature Standard Modern Pioneer