Spirit, the Deathscythe

When this permanent transforms into Spirit,
the Deathscythe attach it to target creature you
control.
Equipped creature gets +2/+2, has first strike
and gains "Whenever a creature dealt damage
by this creature dies this turn, you may search
your library for a card named Kishin Soul, and
put it into your hand. Shuffle your library."
Equip {4}