Over the course of 414 AC to 416 AC, the red dragon worked to undermine the group of adventurers known as the Heroes of the Heart, and (she) secretly worked on a ritual by which she could increase her powers even further and ascend in power to equal the gods.
Top answer
Yes. It makes the meaning clearer (and the reason you have the comma just before it is that you are repeating the subject).
— Philip
Yes.
It makes the meaning clearer (and the reason you have the comma just before it is that you are repeating the subject).
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