Many monsters' cores contain a trace of the monster's consciousness, and using the core for anything will incite the monster's consciousness to resist.
However, before using the core, players would first purify the core, expelling that trace of consciousness, and only then would they utilize the core.
The Magic Dragon Turtle's core had been purified three times before use, for fear of leaving behind any residual consciousness that might interfere during the construction of the Magic Array.
Unexpectedly, even after three purifications, the Magic Dragon Turtle's core still retained a sliver of remnant consciousness, which began to fiercely resist during the spirit conversion phase.
This was already the final stage, and giving up now would be a great pity, so over a dozen mages clenched their teeth and began to increase their magic power output, hoping to suppress the lingering consciousness of the Magic Dragon Turtle.
