Only download a show episode based on a certain condition

[McEnnes]

I would like to download only a certain episode of a show, based on a certain string in the info field.
In my case i would like to download episodes of the daily show, but only when Jon Steward is hosting.
In the info field of the episodes you can see the name of the host, so that could maybe be a trigger to download that episode?
Also for this show the fact is that John Steward is only hosting on mondays, so maybe that can be a trigger?
For now i have all the future episodes of this show marked as "skipped", so i can do a manual search on the days i want this show, but maybe this is also a nice want to have for other shows?