How do I run an automation retroactively?

[Crows Head Archery - www_crowshead_com]

i created a rule after cards were already added to the board

how do i apply that rule to those previously added acrds?

[milynnus]

@Crows Head Archery - www_crowshead_com 

In general, I would collect the cards in a checklist and iterate through them applying the actions you need.