Yami's True Form

If you control a card named Yami, exile it.
Otherwise, search your library or your
graveyard for a card named Yami, put it into
your hand, then shuffle your library if you
searched it this way.
In all these tales, there is no record of a decisive
victor. Has no one emerged victorious? Or was the
event simply not recorded? As the darkness tries to
cover all, forget not the warmth of purifying light.