The Living Room

Ward {4}, Affinity for unlocked Rooms
If The Living Room is your commander, you may have up to two copies of a Room card in your starting library.
Doors you control have Ward {2}.
{2}{t}: Lock any number of doors you control, then create an X/X enchantment
Door creature token with Flying, where X is the number of unlocked doors you control.
Unlocking Doors costs {3} less.