Sirek, Inspiring Inventor

Eminence - As long as Sirek, Inspiring Inventor is
in the command zone or on the battlefield,
activated abilities of other permanents you
control cost {x} less to activate where X is the
number of artifacts you control.
{3}{r/w}{r/w}, {t}: Search your library for an artifact
card and put it onto the battlefield under your
control, then shuffle your library.