Van Hohenheim

+1: Target player sacrifices an artifact, you get a gold token that has, (Sacrifice this artifact: add one mana of any color to your mana pool.)
-2: Sacrifice X artifacts, search your library for an artifact that costs X and put it onto the battlefield, then shuffle your library.
-6: You get an embelem that has, (You may sacrifice an artifact rather then pay the mana cost of a spell.)