Knights of the Silver Dragon

The Knights of the Silver Dragon were an order of knights in the service of Argynvost. They seem to be the "allies" Madam Eva referred to in her fortune telling.

History
Argynvost and his knights fought Strahd during his conquest of Barovia. They were defeated and the dragon was reduced to bones, which Strahd then returned to Castle Ravenloft. The fate of the order following their defeat is unclear.

Current Events
The part learned of the Order and it's story from Rictavio. He believes they are still active in some capacity, though they may not be entirely human. He mentioned being challenged on the roadways by ghosts who demanded to know if he was allied with Strahd. It was implied that responding in the affirmative would be a poor decision.

The party encountered just such a specter on the road to Vallaki following their capture of Mordenkainen. In questioning the knight, they learned that the order was currently led by Vladimir Horngaard.

The party witnessed the destruction of the order and the death of Argynvost in a ghostly vision while en route to the village of Berez.