They learned about how hubris is bad and wanted to make sure they were super prepared, okay. Being cocky never goes well for villains!
As it turns out, being overly prepared also doesn't go terribly well. They should probably contact their union.

"Bring her in. Unharmed," the lead mage says, a wry kind of mockery on the last word, that suggests perhaps he does not mind too much either way how harmed she is, given the state of her. "Go."

With a strange, precise shift, all blades raise at once, points aimed at Avery and shields high, as the gladiators begin to encircle Avery.

Mage B looks at Mage C. Why are we even here, bro? Idk bro, maybe it's for some inexplicable plot reason.