Alphonse, viewer of truth

+1: Return an artifact you control to your hand, play an artifact from your hand with the same converted mana cost without paying its mana cost
-2: Play an artifact from your hand without paying its mana cost
-5: You get an emblem with "Artifact spells you control have converted mana costs 1,2,3,4,5,6,7,8,9,10 at once."