Aslecia's rage had weakened Magna Glacies, but her fluid state allowed her to merge with the princess' will and reform with greater might. The Frost Barrier which isolated Zelai from the Northeast Alliance was no longer to be opened for trade against the will of her people. With their only economic outlet and very survival threatened by greed, Magna Glacies set out on the warpath once more.
See Magna Glacies
Probably means "Great Glacier".
Hidden Boss during the The Frozen Sea Raid Event.