Torna, Plural Prodigy

When Torna, Plural Prodigy enters the battlefield, create tokens of it equal to the amount {x} spent to cast this spell, except they lose all abilities, are non-legendary, and gain the ability: Whenever this creature attacks, each opponent
mills one card.
{x}{x}{x}{u}{t}: Create copies of a creature token you control equal to value {x}.
Whenever a non-token rogue enters the battlefield under your control, create a copy of one creature token you control.