Zaalia's last resort of defense the Hydra Cannons, originally under the ownership of her father Nark; these saber toothed skull blasters were created by a an old friend of the family, and given to Zaal's late father as test prototype for a main project his friend was designing, before the barrier went up trapping the rest of the monsters underground.
The Hydra Cannons since they originally belonged to Nark the skull can use yellow illusion magic (noted by the yellow eyes and tint) fooling enemies into thinking that there's more then just the two.
They can also fire powerful kinetic beams that can devastate an entire landscape; which is why Zaalia rarely uses them outta fear that she'll hurt innocent bystanders or her loved ones.
With That said, It also doesn't help that after her father died Zaal started to take notice of some… odd sentient like behavior from the cannons, and has on many occasion complained about how they're always "thinking" they can just show up and "wander around" where ever they please, especially then they feel she's in distress.