Lucretia, Heir of Wonder

+1: Draw a card, if its an artifact you may play it for half its total converted mana cost rounded up this turn.
-2: Whenever you cast an Artifact spell this turn, create a 1/1 copy of that Artifact, sacrifice it at end of turn.
-7: Search your library for any number of Artifacts, put them onto the battlefield, then shuffle. Those Artifacts become 3/3 Artifact Creatures.