She used 4 magic tools, named Protective Stones that were placed on the ocean's borders and managed to create Hurricanes and Great Waves continuously for over 1000 years without needing to use a lot of Mana.
It succeeded in making humans or demons not dare to pass through the Dark Ocean, because it was certain that their vehicles would be instantly destroyed by the waves and lightning if they dared to enter the Forbidden Area.
However, after she sensed that there were 8 large ships passing through the Forbidden Area at that time she also lost control of her 4 magic tools. The intensity of the Storm and Lightning increased by 10 times, and it caused her Mana to be forcibly sucked up continuously.
Luna, who knew that her magic tool was sabotaged, did not dare to jump directly into the Forbidden Area because her condition would continue to weaken.