Commander Prophyis

As long as your devotion to {u} is greater than any
other color you're associated with, creatures you
control gain flying. The same is true for {b}
instead except replace flying with deathtouch.
You may pay {4}{w} to cast Commander Prophyis
from your graveyard if your devotion to {w} is at
least half that of your devotion to any other color
or greater. Play this ability as a Sorcery.
"Fine by me."