Alec the Deer man

Ever since Alec was a child, he lived in the animal tribe. Each family was given their own animals. Depending on the strengths of the family member, if it was 10 higher then their parents they would change the same animal.
And that's how it was for 1000 years until Alec was born. At first he seemed like a normal child weaker than the rest. However, during one test in his high school year changed his life and he became the deer- because they're strong but gentle. They're dangerous but they're scared. They're deadly but they don't kill.