Is Herald of the Host legal in Standard, Modern, and Commander?

Herald of the Host is legal in: Legacy, Vintage, Commander.

Herald of the Host

Q: What type of card is Herald of the Host?

Herald of the Host is a Creature — Angel. Its oracle text reads: "Flying, vigilance Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.) Power/Toughness: 4/4"

Creature — Angel

Flying, vigilance

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Power/Toughness: 4/4

Set Commander Masters

Rarity Uncommon

Mana Value 5

Artist Nils Hamm

Collector # 30

Scryfall