You unlock this door with the key of imagination. Beyond it is another dimension - a dimension of sound, a dimension of sight, a dimension of mind. You're moving into a land of both shadow and substance, of things and ideas. You've just crossed over into the Twilight Zone.
Here it is a Door to Nothingness deck. The goal is to get boundless realms played as fast as possible while defending yourself with fog effects. At that point Door can be played and activated in one turn. Through using the play tester I've found that the door can be activated on turn 8-10 on average.
Obviously this is a very casual jokey deck but I like the flavor nonetheless. Any advice on how it can be improved is much appreciated.