Once the Lich came to deliver the news, did Danzel hit that he missed one of his best opportunities to actually finish his mission.
Not only did a vast amount of people die from the magic caster dropping an ice mountain on top of them, but now Velkir himself intervened in the "clean up" of this whole mess.
The deal he had was to not let too many people of the dynasty die here. But with how many died and are currently injured, Velkir took matters into his own hands.
And that is by summoning an army of undead to annihilate the remaining soldiers and magic caster of the arcana kingdom. Robbing Danzel off his opportunity to evolve.
Albeit, he was very much aware that he was at fault.
Also considering the damage that his body and armor had suffered, he gave up on cutting the few that are still alive.