A predatory creature gains the ability to travel between dimensions after consuming a human implanted with unknown technology. Along with this power, it inherits fragments of human memories, and unexpectedly, something else begins to develop:
A conscience.
He gains adaptations by consuming the essence of living things, with a limited number of slots for different tiers of adaptations (Minor/Medium/Major). Adaptations can be combined in the future to free up slots.
A lifetime ago a man filled out a CYOA. Due to the choices he made he lived his own lifespan over again in another world before being dropped into another body, and world, for a second time.