Wayne, Metalborn Trader

As Wayne enters the battlefield, exchange control
of target permanent you control with another permanent you don't control with converted
mana cost X or less.
{x}{u}{u}: Wayne, Metalborn Trader becomes a
copy of target creature card on the battlefield or
in a graveyard with converted mana cost X,
except its name is Wayne, Metalborn Trader,
it's legendary in addition to its other types, and it
has this ability.