Each trial had a light source, even though they all took place inside the White Spire, which was basically enclosed by high walls that blocked out the sunlight.
Well, in this case, it wasn't the walls, but Adam didn't know that yet.
So, to prevent a contender from wandering in the darkness during the trials, each of them had an artificial light source that could not be influenced in any way. It was a fake sun that hovered high above, spreading its sometimes bright, sometimes dim light.
But the third trial was an exception. The source of light all this time was a single crystal at the very top, namely the Amber Sun Spear.
As soon as Adam broke the crystal, the third trial plunged into darkness, as only the many bright purple eyes of the wyverns and the intense gaze of the guard remained visible.
However, as soon as Adam threw the spear, light once again covered the battlefield, as all the monsters and even the Azure Wyvern froze in awe.
