Reactive Evolution

Introduction
Reactive evolution is a power that allows a character to automatically adapt to enemy attacks and hostile environments, and/or to grow stronger from sustained damage.

The name is somewhat of a misnomer, since although it is named after biological evolution, real evolution happens to populations, not individuals.

This power is one of the abilities most known for being considered a no-limits fallacy. However, it can still be quantified by the demonstrated feats, and a reasonable limit can usually be extrapolated.