The rarity of Covert Saboteur is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Covert Saboteur is a skin for Riki. The skin was added to the game on May 13, 2015, it was created by Jeremy Klein.
Covert Saboteur is currently one of the most popular skins, but it is rarely seen in the game due to its high price.