Morningstar is a sparse and evocative faction and tactical encounter for FIST.
It does some fairly interesting stuff by leaving the faction's lore and motives to a table roll, but as a result requires the GM to backfill some history and motive in order to understand how the faction thinks and reacts.
The PDF is 6 pages, with lovely stylized art and a grainy, immersive layout. It looks gorgeous.
The actual game-meat here is a little scant, but the potential for good, interesting stories is very high. A GM who's willing to add some flesh and interconnect Morningstar with other campaign elements will have a nice, flavorful encounter.
Overall, if you want to build a session around engaging with a radioactive skeleton cult in Prague, give this a look!