Legion Loyalty is a mythic Enchantment card from Modern Horizons 3 Commander (M3C), collector number 171. Current market price: $0.33, TCGplayer market prices via Scryfall.
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.)