Empyrean Emporium

When Empyrean Emporium enters the battlefield, you may search your library for a artifact, instant or sorcery card, reveal it, then shuffle. Put that card into your hand if you control
an Artificer, Warlock or Wizard. Otherwise, put
that card on top of your library.

Artifacts, instants and sorcery spells you cast cost
{1} less to cast.