Urza's Saga

I - Urzas Saga gains {t}: Add {c}.
II - Urzas 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.