Is Nascent Metamorph legal in Standard, Modern, and Commander?

Nascent Metamorph is legal in: Legacy, Vintage, Commander.

Nascent Metamorph

Q: What type of card is Nascent Metamorph?

Nascent Metamorph is a Creature — Shapeshifter. Its oracle text reads: "Whenever this creature attacks or blocks, target opponent reveals cards from the top of their library until they reveal a creature card. This creature becomes a copy of that card until end of turn. Then that player puts all cards revealed this way on the bottom of their library in a random order."

Creature — Shapeshifter

Whenever this creature attacks or blocks, target opponent reveals cards from the top of their library until they reveal a creature card. This creature becomes a copy of that card until end of turn. Then that player puts all cards revealed this way on the bottom of their library in a random order.

Set Commander 2020

Rarity Rare

Mana Value 2

Artist Brian Valeza

Collector # 36

Scryfall Gatherer