Is Legion Loyalty legal in Standard, Modern, and Commander?

Legion Loyalty is legal in: Legacy, Vintage, Commander.

Legion Loyalty

Q: What type of card is Legion Loyalty?

Legion Loyalty is an Enchantment. Its oracle text reads: "Creatures you control have myriad. (Whenever a creature with myriad 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.)"

Enchantment

Creatures you control have myriad. (Whenever a creature with myriad 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.)

Set Tarkir: Dragonstorm Commander

Rarity Mythic Rare

Mana Value 8

Artist Michal Ivan

Collector # 122

Scryfall