While working on a solution to show C when A<B using Butler for @Brett K. on his question
I found out that there is a variable {cardlastactivitydate} . This is not documented in Trello Variable Help
and Yes, you can handle conditions with Butler - details see here
look for module in module list under Knowledge Base Page.
Have you come across other undocumented variables?
In Singlish, your comment is “chim”. In any case, 🙏 for sharing.
Looks like the variable was from Butler Bot. Found it here https://trello.com/c/MDLEnYg7/26-whats-new
Tested it just to be sure and found that it works.