Müge, Seeker of Knowledge

Muge, Seeker of Knowledge doesn't untap
during your untap phase unless you sacrifice
an Artifact.
{3}{u}{t}: Search your library for an Artifact
whose converted mana cost is {5} or less, and
put it into play.
If you control three or more Artifacts, Muge,
Seeker of Knowledge gains +2/+2, Flying, and
Lifelink.