Adept Satchel Charge

This is a satchel full of volatile magic stones and a highly reactive gel that can blow up a wall or door. This charge takes 4 actions (24 seconds) to use: set the charge, arm the charge, use black powder to create a 10 foot line away, and then light the fuse.  The charge will explode in a 10-foot sphere and a 20-foot cone in the direction of the surface upon which the charge was placed.

Because of the highly volatile nature of this contraption, you can only carry 1 satchel charge at a time.

They can penetrate through 3 ft of Wood and 2 ft of Stone. Any enemies within the blast range/cone must roll a DC 14 Dex saving throw. On a failed save, the target will take damage based on the surface the charge was placed on, be knocked prone and be deafened for one round.

Wood Surface. 3d8 damage

Stone Surface. 5d8 damage

On a success they take half damage.

Notes: Damage, Combat, Subclass Feature