Thorn is an Item that can be found within common locations, including choice enemy Camps, given by Spouses, and rarely as a reward from Seasonal Festivals. Upon being picked up, a Thorn orbital will start circling the character slowly clockwise. On contacting an Enemy, it will deal 80 damage in roughly 1 second intervals. Any enemy killed by Thorn is guaranteed to drop 2-3 Fertilizer.
The Thorn can be quite an effective way to kill Enemies and provides a reliable way to get Fertilizer. However, in many cases it can be dangerous to get close enough to Enemies to effectively use Thorn. Also, as a run progresses, the Thorn will lose its ability to kill most enemies in one hit, making it even riskier to use. This is no problem for Enemies that do not deal contact damage, such as Locusts, however.
The following is a list of possible Items that can affect Thorn:
- Prior to Patch 1.2.1f4, it was possible to have up to three Thorns at once. To make up for this, the Thorn began to orbit faster and closer to the player's Character.