Jeong Jeong, the Deserter

When Jeong Jeong, the Deserter, blocks or
becomes blocked, its base power becomes equal
to the blocked or blocking creature's toughness,
and its base toughness becomes equal to the
blocked or blocking creatures power plus 1.
"Fire brings only destruction and pain. It forces those
of us burdened with its care to walk a razor's edge
between humanity and savagery. Eventually, we are
torn apart."