Kraimar Cragchin, Forgemaster

{u/b}, {t}: Regenerate target artifact with converted mana cost 3 or less.
{u/b}, {t}: Attach target Equipment you control with living weapon to a creature you control.
{u}{u}{b}{b}, {t}: Sacrifice an artifact. Scry 2.
"Step back ruffian or face the wonders of science!"