Is Changeling Berserker legal in Standard, Modern, and Commander?

Changeling Berserker is legal in: Modern, Legacy, Vintage, Commander.

Changeling Berserker

Q: What type of card is Changeling Berserker?

Changeling Berserker is a Creature — Shapeshifter. Its oracle text reads: "Changeling (This card is every creature type.) Haste Champion a creature (When this enters, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield.)"

Creature — Shapeshifter

Changeling (This card is every creature type.)

Haste

Champion a creature (When this enters, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield.)

Set Lorwyn

Rarity Uncommon

Mana Value 4

Artist Warren Mahy

Collector # 160

Scryfall Gatherer