Well in the end I think you also originally understood the original effect of the 2nd Spirit Ability:
>It was supposed to be a single attack charged to the opponent. In that attack the body becomes three times tougher in order to deal more damage and after the ability is executed the hardening is also lost.
About the 1st Spirit Ability. I only inteded it to last for about 8-10 seconds as a chasing ability towards enemies who tries to escape.