Urza's Saga

(As this Saga enters and after your draw step,
add a lore counter. Sacrifice after III.)
I - Urza's Saga gains "{t}: Add {c}."
II - Urza's Saga gains "{2}, {t}: Create a 0/0
colorless Construct artifact creature token with
"This creature gets +1/+1 for each artifact
you control."
III - Search your library for an artifact card
with mana cost {0} or {1}, put it onto the battlefield,
then shuffle.