Initialization

Getting superpowers is not for the faint of heart.
It gets caused by some drastic change in your life that in triggers a particular chemical concoction in your body, which in turn generates the minor alterations needed to allow for whatever power is developed.
These changes require high emotional and hormonal generation. If you're not worked up, physically and mentally, under the right conditions, nothing is going to happen. This is why the majority of powers emerge during adolescence, since the hormonal changes help. Also why it's so rare for people past a certain age to get powers because it requires a pretty awful trauma to generate the necessary visceral reaction.

Type

Genetic