My Idea for a shapeshifter killer
Ability: Mind Games
Press the active ability button to become a random survivor. During this time, you have the ability to drop pallets and vault windows. Attacking while copying will reveal yourself; and the ability will go on cooldown for 15 seconds.
While copying a survivor you can access your secondary ability.
Secondary ability: Machinations of Fear
While copying a survivor, you can place down a fake copy of your killer. It will patrol an area and will chase down survivors who get near. It cannot harm survivors, and will disappear if a pallet is dropped onto it.
Special Ability: The Final Act
Once only one survivor remains, The Final Act activates. During this time, multiple killer copies will be placed with 48 meters of the survivor, and they will all start chasing that survivor from various angles. They act as normal copies, creating confusion until The Shapeshifter can enact the final blow.