Keystone Trap

A sealed vault crowned by a metal keystone — touch it wrong and the whole mechanism wakes, crackling with current and spitting darts as it spins to defend its contents.

Disable DC 24 Thievery (trained) to find and press hidden knobs in a specific order (three successes are required to disable the trap, which also opens it); DC 24 Crafting (expert) to sabotage the vault's mechanisms, reducing its actions by 1 (when the trap's actions are reduced to 0, it is disabled)

Exposed Vault [Reaction]

Routine (3 actions) The keystone uses its 3 actions to Electrify, Spin, and then Launch Darts. When the trap loses an action, roll randomly to determine which action it loses.

Electrify [Single Action] The metal vault crackles with electricity.

Level 7 · Complexity Complex

Stealth +17 (expert)

Disable

• Thievery DC 24 (trained) — to find and press hidden knobs in a specific order (three successes are required to disable the trap, which also opens it)
• Crafting DC 24 (expert) — to sabotage the vault's mechanisms, reducing its actions by 1 (when the trap's actions are reduced to 0, it is disabled)

AC 25

HP 60 · Hardness 12

Immunities critical hits, object immunities, precision damage

Trigger The vault is exposed

Effect The vault makes a poison dart spray Strike at a random creature within 30 feet. The trap then rolls initiative.