When Reca finished harnessing all of her mana and stamina, the domain was dispersed since her attack had way more energy than Rain was using to keep the domain and then she threw her spear toward the tower. The guards there didn't even have time to react… the spear flew so fast that not even Rain was able to see it. He only saw the final result.
The spear hit the base of the tower, which was fifty meters wide and long and three hundred meters tall, and completely blew away the base. At the same time, the tower began to fall toward the group, but they began to use Impulse to cross the area as the guards jumped from the falling structure. Before long, Reca recovered her weapon and then sighed… the weapon had lost all of its edge, and the tip was pretty much gone… even though it was a weapon made of ice dragon parts, it was only natural that such a level of attack.
"Awesome, right?" Reca asked. "I call that: Gae Bolg."
"... Explain yourself, Nigel," Rain said.
