The skin was added to the game on September 1, 2021. It was created by VALVE.
The rarity of Test of the Basilisk Lord - Belt is Mythical, and been equipped it takes a “belt” slot. The skin doesn’t have alternative styles. At this moment the item is not available for trade.
At the moment, Test of the Basilisk Lord - Belt is not on the list of popular skins and is rarely seen in the game.