The bead chains Isola used is quite similar to what Emma used to wear during CS1... coincidence? A charm?? Might have to open CS4 to see if other witches in Eryn village also wears these...
KERYKEION. We first saw it wielded by Vita then Roselia, then Emma... We all know that it changes it's own stone color based on the wielder's magic power, so her mana must be blue, similar to Vita's...