Sith Holocron

{1}{r}: Gain control of target artifact with converted mana cost 3 or less until end of
turn. Untap that artifact. Sacrifice Sith Holocron at the beginning of your next end step.
{1}{b}, Sacrifice this artifact: Draw two cards,
and you and another target player lose 2 life.
A key to many doors, both metaphorical and literal.