The ancient beast snake didn't need to sleep too much, but it also didn't like being disturbed during its sleep. The Zokline is actually a very temperamental beast, especially when they wake up.
In ancient times, it even destroyed countless mountains because a rock hit its head and woke it from its long slumber. The snake beast has a unique habit of slumbering for a long time and goes on a rampage when it wakes up.
There is even a Myth in a few places. A gigantic disaster snake will appear if they disturb nature. The only reason it tolerates the couple and does not kill them is that Anna will hate Onyx if he hurts them even a little bit.
He knows how the black staff artifact was reprimanded and punished by Anna after releasing a wave and indirectly throwing Angus and Jayna.
