Banshee's Symphony

Stealth +30 (legendary)

Disable Thievery DC 42 (master) to pierce the invisible larynx so precisely that the magic releases in a trickle before the trap activates, Thievery DC 44 (legendary) three times to deconstruct the larynx while the trap is active in such a way that it tears the spell apart, or spell DC 38 (9th level) to counteract the wail of the banshee before the trap activates

Scream [Reaction] Trigger Three or more living creatures remain within 100 feet of the trap for 6 seconds or longer.

Routine (1 action) The trap uses its action to force one random creature that failed its save against wail of the banshee last turn to emit a wail of the banshee with the same statistics as the initial one.

Level 18 · Complexity Complex

Stealth +30 (legendary)

Disable

• Thievery DC 42 (master) — (master) to pierce the invisible larynx so precisely that the magic releases in a trickle before the trap activates, Thievery
• DC 44 (legendary) — (legendary) three times to deconstruct the larynx while the trap is active in such a way that it tears the spell apart, or spell
• DC 38 — (9th level) to counteract the wail of the banshee before the trap activates

Effect The trap releases an arcane wail of the banshee (DC 40) with a 100-foot-radius emanation instead of 40 feet, targeting all living creatures in the area, and rolls initiative.

Reset The trap ends when the trap is unable to make a creature scream (usually because no creature failed its save on the previous turn or because all creatures have critically succeeded in the past). It then resets over 24 hours, as a new scream builds up in the mummified larynx.