Legacist
A person who strives to help others through acts of kindest that leaves an ever lasting impression or impact on their community, country or the world. Without knowing it or effort they make the world a better place when they leave then when they arrived.
Wow - I can't believe how many legacists I've come across in my life in school, church-synagogue-mosque, sport - all of them have made all of us better people and focussed on making the world a better place. It's like the Montreal Canadians dressing room "to you from failing hands we throw the torch.... be yours to hold it high,"