Lithon Tur's Seer

Artifact Enchantment Channeler — When you
play your first card with Channler this
game, choose a Channeler Color. Whenever
you cast an Artifact or enchantment spell of
the chosen color, you may look at the top
four cards of your library, put an artifact
card from among them into your hand, and
put the rest back on top in any order.