Door to the Grave

Door to the Grave releases icy necromantic energy from a frost-covered lock as an adventurer reaches toward it.Magic trap

Door to the Grave guards a lock with the chill of death. When anything touches the lock, it releases a magical wave of grave-cold energy that washes over nearby creatures.

Detecting the Trap. A character who succeeds on a DC 15 Wisdom (Perception) check senses an unnatural drop in temperature near the lock and notices faint ice forming inside it.

A spell or other effect that senses magic, such as Detect Magic, reveals an aura of necromancy around the lock.

Trigger. The trap activates when anything touches the lock.

Effect. Each creature within 5 feet of the lock when the trap activates must make a DC 15 Constitution saving throw, taking 5 (1d10) necrotic damage on a failed save, or half as much damage on a successful one.