Previously, Evan had been somewhat conflicted about how he should deal with Eldrakar and Akasha.
Eldrakar was the ruler of the dragons, and if he were to fall, the dragon clan would likely face a significant decline in the coming days.
Since Anastasia was the Progenitor of Dragons, the dragons were, in reality, her force.
If she truly decided to reclaim her authority, even Eldrakar wouldn't be able to stop her from regaining control over the dragons.
Her dragon bloodline was simply that powerful, capable of forcing all dragons to submit to her whether they wished to or not.
If he were to kill Eldrakar and weaken the dragon clan, it would essentially be the same as weakening their own forces, as dragons were, in essence, their own army.
As for Akasha, Evan had not wanted to deal with her earlier because, first of all, she was one of the Monarchs, so her strength was unquestionable.
