Joker

{x}{b}{b}, {t}; Target creature you control with converted mana cost X or less becomes an
equipment and is equipped to Joker. The
equipped creature adds all of its card effects,
types and half of it's power and toughness
(rounded down) to Joker's. He may have one
equipped creature at a time. If this ability is used
while joker has an equipped creature, the
equipped creature goes to the graveyard, and the
new one is equipped.