Master's Guide-Mural // Master's Manufactory

When Master's Guide-Mural enters the battlefield, create a 4/4 white and blue Golem artifact creature token.
Craft with artifact {4}{W}{W}{U} ({4}{W}{W}{U}, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.) {T}: Create a 4/4 white and blue Golem artifact creature token. Activate only if Master's Manufactory or another artifact entered the battlefield under your contr