Buddy Guy, Ex BoS Mechanic

When Buddy Guy, Ex BoS Mechanic enters,
you get X {e}.

Pay 1 {e}: Create a Junk token.

Pay 3 {e}: Artifacts you control gain "{t}: Draw a card, then discard a card ." until end of turn.

Pay 5 {e}, {t}, Exile two artifacts from your graveyard: Search your library for an artifact and put it onto the battlefield. Then shuffle your library.