There was always a risk that inherently comes with the act of 'copying' someone beyond the point of simply disguising oneself.
The bleeding between emotions, egos merging together.
A conflict of interest between thought patterns and even situations where one 'mind' would be too strong and begin taking over the body.
Cayla had seen countless cases like this, and even for the Mirror Jester, it had its own history of losing his own 'mask' once he applied too many to himself.
Where did his mask begin and end? Was it still in the pile or was it discarded?
When Alice wanted to use this opportunity to explore her skills through different perspectives, what she was actually doing was usurping everything they had learnt in their lives.
Their history, the marks they left behind. Everything that was recorded into their soul, the documents left by this world.
That was the ambitious idea that she had.
To trace everything they left behind without exception.
