Storm-Breath Siphon
A series of bronze filaments and magnetized river stones woven into a lattice across the floor of an underwater cavern. The trap harnesses the natural electrical energy of a Bronze Dragon's breath and stores it within the water's mineral content.
Storm-Breath Siphon
Defenses
Detection
“In the dim light of the cave, the trap appears as thin, glittering strands of bronze wire that weave through patches of bioluminescent moss. The water around these wires seems to shimmer with a faint, blueish tint and small air bubbles cling to the metal as if agitated.”
Standard Engagement
The trap triggers when a creature of Small size or larger passes through the 10-foot wide corridor containing the bronze lattice without first speaking the password in Draconic.
None. As a simple hazard, it triggers once and then requires a reset or a cooling period.
The siphon automatically recharges itself over the course of 1 minute as it pulls ambient electricity from the dragon's nearby presence or the rushing river current.
When triggered, the trap releases a massive burst of electrical energy into the water. Every creature within a 20-foot radius of the center of the lattice must make a DC 15 Dexterity saving throw. On a failure, a creature takes 6d10 lightning damage and is stunned until the end of its next turn. On a success, the creature takes half as much damage and is not stunned.
Because the trap is underwater, creatures wearing metal armor have disadvantage on the Dexterity saving throw against the Galvanic Discharge.
Dealing at least 10 thunder damage to the lattice causes the bronze filaments to vibrate violently and shatter, permanently destroying the trap.
Turn Storm-Breath Siphon into a sheet
A high-res, share-ready sheet you can post or print.