Ladirma or was now Worm1 thought his Master would work him to his exhaustion as a slave. But he was wrong about it. The order for him was to keep watch on The Temple's army, to ensure no one escaped. Yep, The Black Iron Ladirma was used as a watchdog, and he witnessed how scary his Master was.
He witnessed his Master summon a Black Dragon and also a black wyvern. Those two creatures were scary enough, but there was an undead and a demon that rivaled him as well. As for the Evil Woman, he did not dare to look at where she fought. He was scared to see her fighting, and the angelic woman was no less scary than the evil woman.
On top of all that, the skeleton army actually rivaled the Temple's army as well which made his Master scarier. The skeleton was part of his summon, and that made his Master an army. He was not just an individual, but an army by himself.