Jason imagined that it was because his skeletons did half of the job that would explain it, even though it was a bit weird. They weren't summoned by his weapon, so it made sense. The system worked following that kind of logic, so there was no point in worrying too much about it.
"Fighting giants is a bit more complicated and they can make up for their speed with an unstoppable charge and their massive weight," Jason thought. "My skeletons can't stop them, so I will have to be more mindful of those charges."
Before Jason could come up with any other plan, he could hear the footsteps of more giants approaching. It seemed that all of them were informed of his arrival, so he could guess that their leader was also aware of him.
