Yang Wen-li, Hero of El Facil

Whenever you cast an artifact spell create a 1/1 colourless artifact creature token with " This
creature crews vehicles as though its power was 2 greater."
Whenever one or more creatures you control attack
you may pay {x}, If you do reveal the top X cards
of your library put all artifacts cards from among
them into your hand then put the rest on the
bottom of your library in a random order.