I think what you'd want to do there is set the card date range to something fairly inclusive, like last week or last month or all time, and have a beast mode that does that detailed filtering for you.

case
when DAYOFWEEK(CURRENT_DATE()) = 2 and `trx_date` = DATE_SUB(CURRENT_DATE(), interval 4 day) then 'Include'
when DAYOFWEEK(CURRENT_DATE()) <> 2 and `trx_date` = DATE_SUB(CURRENT_DATE(), interval 2 day) then 'Include'
else 'Exclude'
end

Or something along those lines.

Use that beast mode to only include the "Include" values.