The beholder was expected to be a tricky creature to fight against.
Hence, the three half-bloods prepared multiple combinations of tactics to make sure any possible scenario was covered.
Other than the big one, the 10 eyes would need to be destroyed in a certain order to successfully defeat the creature.
The order was petrifying eyes, recovering eyes, dispelling eyes, and finally, the eyes that shoot energy rays.
As the eyes could attack simultaneously when they engaged in battle, Emery and the two girls would have to avoid the powerful energy ray blast attacks, while keeping the main eye in check by forcing it to blink or having a good enough power to block it. All without using any spells.
Through practice, it was decided Silva was the most agile among them. The Kimoyin transformation was able to boost her agility significantly, so she was given the role of bait to distract the creature.