"I don't want to tell you this to ruin what you are preparing for, but this is a triple boundary." Walker had sensed the strength in the fire mana increased, but he had not expected that there was such a large change in the surrounding sore. Remey had though.
Because Remey had such a dependency on fire mana, she had sensed it the second that the planes shifted again. She could see the fire elemental plane clashing with the light and the water elemental planes now.
It created a singular point where all three elemental planes mixed which made itself a dangerous intersection. The odds were that this sort of boundary was not always asd powerful, but because the tidal whales had pushed the denser water manas around, they had changed the flow slightly.