Autobenefactive case

/ˌɔːtəʊbˌɛnɪfˈaktɪv kˈeɪs/

/ˌɔːɾoʊbˌɛnɪfˈæktɪv kˈeɪs/

a grammatical feature or case in a language where the subject of a verb acts upon themselves or benefits from their own action