Shadow of Raven

{w/b}: Shadow of Raven becomes a Shade with base
power and toughness 2/2 and gains deathtouch.
{w/b}{w/b}{w/b}: If Shadow of Raven is a Shade, it
becomes a Shade Spirit with base power and toughness 3/3 and gains "{b}: Shadow of Raven
gets +1/+1 until end of turn."
{w/b}{w/b}{w/b}{w/b}{w/b}: If Shadow of Raven is a Shade Spirit
it becomes a Raven with base power 7/7
and flying.