There and Back Again

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III)
I- Up to one target creature can't block for as long
as you control There and Back Again. The Ring tempts you.
II- Search your library for a Mountain card, put it onto the battlefield and shuffle.
III- Create Smaug, a Legendary 6/6 red Dragon creature with Flying. Haste, and "When this creature dies, create 14 Treasure tokens."