A Water Guardian
*Crack*
Over and over, the dungeon boss, rammed at the Ice sphere john had formed. The outside couldn't be seen as it was a dark ice sphere so they didn't know what was attacking them
"John, did you see it?" Serena asked
"No... I only saw it's outline thanks to deprehendre." John replied
"Me too..." Said Ariel
[She has a wind version of deprehendre... It works underwater?]
*Crack*
"Then, if we can't see it without magic, that means it's using something to coumaflage itself... Right?" John asked
"Not exactly."
"Then what is it, Master?"
"It's a elemental guardian bound to a water filled location."
*Crack*
"So it's one with the water?"
"In a way."