As it has been said many, many times, Melis was a naturally gifted individual. She was attending a prestigious institution and coupled with the fact that she was a hard worker, it was no surprise that she created new heights for the magus community.
She was the youngest Grand Magus. She was at the top of her class. And to top it off, she created spells that have never been seen before. The water tower was one of them. It was an advanced version of the water spiral and featured innovative mana usage. Of course, Avina knew nothing about the ingenious of the spell, but could calmly verify that when it was released, it gained a lot of reactions, mainly positive ones.
It solidified Melis's standings as one of the greatest mages of the century and news of her achievements spread across the continent. Many tried to replicate the water tower but could never achieve the perfection Melis showed.