Ghost, Who Owns The Shadows

First Strike, Flash, As long as you control a land
called The Shadow Realm, Ghost, Who Owns
The Shadows has +2/+1.
Tap a Swamp or Waste you control: Ghost, Who
Owns The Shadows cannot be blocked this turn.
Sacrifice a land: phase out Ghost, Who Owns
The Shadows. You may phase him back in at
any time.
Every shadow, every flickering light is a hiding
place for him. I should know.
-The General