Sauron, Captain of Angband

Menace
Smithcraft - Blue spells, red spells, and black
spells you cast cost {1} less to cast as long as you
control three or more artifacts.
When Sauron, Captain of Angband dies, you
may search your library for a card named Mairon,
of Many Names, reveal it and put it into your
hand. Then shuflle your library.