Fable of the Mirror-Breaker

I — Create a 2/2 red Goblin Shaman creature token with "Whenever this creature attacks, create a Treasure token."II — You may discard up to two cards. If you do, draw that many cards.III — Exile this Saga, then return it to the battlefield transformed under your control.

,: Create a token that's a copy of another target nonlegendary creature you control, except it has haste. Sacrifice it at the beginning of the next end step.