The Color Castle

The Color Castle enters the battlefield tapped.
{t}: Add {w} or {r}.
{1}{w}{r}: The Color Castle becomes a 3/2 white
and red castle creature until end of turn and
can't be blocked this turn. It's still a land.
"The fairy tale journey may look like an outward
trek across plains and mountains, through castles
and forests, but the actual movement
is inward, into the lands of the soul."