Sacred Flame Gem Trap
A marble pedestal heaped with treasure stands in the center of the room. Floating a few inches above the treasure is a fist-sized gem etched with a holy symbol.
A creature that ends its turn within 30 feet of the gem and within line of sight triggers a Critical Failure.
Exploration. A creature that makes an Arcana check suspects that the gem won’t fire at creatures not in its line of sight. A creature that makes a Religion check recognizes the deity associated with the gem’s holy symbol and knows that the god’s followers sometimes use such gems to guard sacred treasures from the unfaithful.
Gem. The gem is sacred to a particular deity and does not fire at creatures visibly wearing that god’s holy symbol. Covering the gem (with a bedroll or similar object) prevents the gem from firing. Moving the gem 30 feet away from its pedestal triggers a Critical Success.
Spell Effect. This is an evocation effect created by a 1st-level spell.
- The gem is an object with AC 20, 10 hit points, and immunity to piercing, psychic, and poison damage. Attacking the gem without destroying it outright triggers a Failure. Destroying the gem disables the trap.
Potential Outcomes
Critical Failure or Failure. The gem fires a beam of radiant energy at the triggering creature. The creature must make a DC 12 Dexterity saving throw or take 4 (1d8) radiant damage. The target gains no benefit from cover for this saving throw.
Success. The trap is disabled for 1 round. Any Success triggered during this time counts as a Critical Success.
Critical Success. The trap is disabled. The gem magically shrinks and becomes a nonmagical gem worth 100 gp.