Capítulo 1727: Deep Trouble (Part 1)

"Hold your breath and follow me." Protector dived in the lake, swimming toward the bottom of the lake where the underground spring was.

Then, he used the first password to stop the water flow and go through the long tunnel the river came from without having to fight the current. It was a simple but effective measure against fake mages.

The arrays were too deep to be detected and once in the water, fake mages would be incapable of using magic. 

Once inside, the second password opened a secret passage in the rock that led to a dry space where water couldn't enter due to an array. The others followed him closely, drying their hair and clothes as soon as he told them they wouldn't swim anymore.

'We'll cover the rest on foot.' Protector said via a mind link. 'No talking and no lights.'