found_by: querythatfindssearchcards ?  I think that works.

There are issues: http://test.dwagn.org/wagn/found_by_and_whatever

  --John Abbe.....Sat Feb 26 15:32:58 -0800 2011

yeah, you can't use virtual cards there. In general, WQL just (a) generates SQL, (b) runs it, and then (c) massages results. Anything that involves lots of magic nested deep within the SQL is going to be hard to pull off, and even harder to pull off efficiently.

  --Ethan McCutchen.....2013-04-03 15:36:41 +0000