Hellfire Arrow

Hellfire Arrows are a type of ammunition that creates a small explosion upon impact similar to Grenades, damaging everything in the area (including the player). This may imply that the arrow is explosive-tipped. These arrows can be very useful against tight packs of enemies and worms such as Bone Serpents, as the explosion may damage multiple segments. Hellfire Arrows cannot be recovered once fired.

It can be found in Shadow Chests and Pots in the The Underworld, crafted at an anvil, or purchased from the Demolitionist once you activate hardmode.

History
Flèche de Hellfire Hellfire Arrow Стрелы адского огня