Fuxing, Celestial Fortune

Whenever you cast an Instant or Sorcery spell,
create a Fortune token with "2, Sacrifice this
Artifact: Draw a card."
Sacrifice X Fortune tokens: Look at the top X
cards of your library. You may cast an Instant or Sorcery card with mana value X or less revealed
this way without paying its mana cost. Put the
rest on the bottom of your library.