When they collided, they absorbed everything around them. This energy gave them power and strength.
However, there was a catch: they couldn't interact with normal objects or people apart from him on first contact. Made of light, they absorbed energy instead of releasing it.
This meant that the more energy they released, the weaker they became. If they kept using their powers, they eventually ran out of energy altogether.
Eventually, he wouldn't even be able to move.
Because of this, Lumos had to stop using his power excessively before it happened.
Invisibility. There were many ways to explain it, but in essence, it was about absorbing light and making yourself invisible.
There were two main methods for doing so. One involved absorbing light particles and making yourself invisible. Another part involved emitting light particles and making someone else invisible.
