Tezzeret, Forger of Steel

: Tezzeret, Forger of Steel enters the battlefield with a number of loyalty counters equal to the number of artifacts you control. Partner
+1: Target artifact becomes a artifact creature with base power/toughness X/X until end of turn, where X is it's mana cost
-8: You may cast target artifact, instant or sorcery card from your graveyard without paying it's mana cost until end of turn