Blastbag

This thin bag is filled with a seemingly harmless liquid, however, when the right ingredient is added, it becomes a volatile concoction.

• Deployment. You add the catalyst ingredient and safely toss or slide the bag up to 20 feet before the componenets fully mix.
• Trigger. When the bag is impacted by a rapid force, such as that of being stepped on or hit by an arrow, the volatile mixture bursts into a ball of sticky burning liquid.
• Effect. A 5-foot sphere erupts in flaming liquid centered on the blastbag. Each creature within the sphere must make a Dexterity saving throw , taking fire damage equal to your Sneak Attack bonus on a failed save or half as much on a successful one. Creatures who fail this saving throw are covered in a sticky burning compound, and take an additional 1d4 fire damage at the beginning of their next turn.
• Countermeasures. On a successful Dexterity (Sleight of Hand) check versus your trap save DC, the bag can be disarmed by carefully opening it with a blade and allowing the fluid to drain slowly. On a failed check the bag explodes as if it were triggered normally.