[quote=@Balthazar007]
But for anyone else seeing this, you don't have to list the Key Stone in your inventory, it is an implied item that anyone can get by visiting Professor Sycamore. 
[/quote]
I can remove it if you'd like? I just wanted to clarify that Winter already has and can use Mega Evolution from the start. It plays a significant role in his biography that I'll draft over the next day or so.