Hello! Given the circumstances of their arrival, everyone would be stripped of all abilities until regained via rewards, including innate ones that are not necessary for survival. Both his wings and snake form would fall under the small power regain each (or the full regain to obtain them at the same time with all other abilities).

We would note that his wings and snake form would be slightly less powerful than the faction-related wings (Sylph) and land animal transformation (Dryad) abilities offered, and may even work oddly if use in an environment specific to those faction-related powers.