As a loud rumble rang through the air, Blaine's eyes narrowed.
Something was coming.
Without wasting another moment, he scanned his surroundings apprehensively, searching for the origin of the sound.
It was then that he noticed it.
The bioluminescent moss that adorned the cave's expanse suddenly began to flicker and dim.
Like dying flames in the wind moments before being put out.
Since the moss consumed mana from their surroundings to produce light, the concentration of mana around him was plummeting rapidly.
Blaine summoned a green energy construct next to him to test his theory.
Not having put much effort into giving it a coherent shape, the construct looked like a misshapen blob with no apparent function or purpose.
Without wasting another second, he hurriedly dismissed it.
Since the object wasn't destroyed, the characteristic chime of shattering glass didn't ring out.