The rarity of Dragonfire is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
Dragonfire is a skin for Lina. The skin was added to the game on May 29, 2014, it was created by Vermilion Wlad.
Dragonfire is currently one of the most popular skins, but it is rarely seen in the game due to its high price.