Is Caller of the Pack legal in Standard, Modern, and Commander?

Caller of the Pack is legal in: Legacy, Vintage, Commander.

Caller of the Pack

Q: What type of card is Caller of the Pack?

Caller of the Pack is a Creature — Beast. Its oracle text reads: "Trample 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: 8/6"

Creature — Beast

Trample

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: 8/6

Set Commander Anthology

Rarity Uncommon

Mana Value 7

Artist Ryan Yee

Collector # 94

Scryfall