Im starting to have a bad feeling that there is a second item of power from the mothers. Maybe Summer had a similar item, of the opposite nature, in other words creation? An item which was used by the original Merlin to create the prison on Demonreach. In order to counter the loss of power from Winter and to balance it out, Summer gave its item to a powerful wizard in order to check the power of Merlin? Eventually passing on to those holding the blackstaff position? I just feel so far every thing in summer and winter has been balanced. Summer has less forces, but Winter has an additional responsibility so why wouldnt summer also have an additional responsibility... it would also explain why Lily was the one to counter demonreach not Maeve... as Summers power created the Island... ofc im just thinking and speculating so you never know! Jim's mind is kinda a crazy maze imo and you never know whats gonna be around the next corner!