What once existed is now shards of reality, floating in the sea of conflict...
The Truth Mage, Veracit, feared to utilize the Observer's Paradox, uncomfortable with their perilous effect on reality.
It's so cute!
Wait, why is it glowing?
A magical pair of glasses once allowed the sharpest of minds to perceive the physical world around him. His cutting insight, throwing light on the darkest of secrets, is now housed within the spectacles.
A race of beings actually IS invunerable while in adolecence. They age, but cannot be killed. A miniority of the race (1 in 20) does not become invunerable, but rather becomes immortal at some point in thier adolecence, and ceases aging while being vunerable to death in all the normal ways. Another minority (also 1 in 20) Permanatly becomes invunerable after adolecence, but ages twice as fast as the race normally does. There is no known way to test for which of the three traits an individual manifests and the three traits cannot mix, as they are tied to the same gene, as it were.