Builder champion

I have been thinking about a builder champion, one that would collect scrap pieces around the map maybe obtained from a minion ,monster or kill. The mechanics of this would work like you're building a machine that progressively gets better or worse depending on what parts you mix and match with it ,like rumble but not completed yet. To not make it so over powered the machine would have a durability which could be fixed with the r or something along those lines. I was thinking that the name could be heimerella this goes along with heimer ,and in the lore heimerella would be heimers sister.

All this is an idea that I just wanted to let people think about I would love to read your comments and critiques about this idea