Lesser Guardian Hammer

A lesser guardian hammer is an invisible, hammer-shaped field of force that appears when a guarded door, lock, threshold, or area is disturbed (even years after the spell was cast). When activated, it flies through the air to strike the nearest living creature (if more than one is closest, determine the one struck randomly). A guardian hammer strikes only once, but does not miss. When striking, it appears momentarily as a glowing, translucent hammer and then fades away into nothingness. Its unavoidable strike inflicts 2d12 points of damage. The being struck must make a saving throw vs. petrification to avoid being knocked down.

A lesser guardian hammer can be destroyed before activation a successful dispel magic cast on the guarded area, or by totally destroying the guarded area without entering it (for example, by disintegration). The presence of an antimagic shell or its equivalent can suppress the ward, preventing activation. Once activated, a lesser guardian hammer bypasses all magical and physical barriers. It cannot be destroyed, reflected, or diverted by any means, although magic resistance functions normally.

The material components for this spell are a drop of sweat or spittle or a tear from the caster, a hair (from any creature), and a pebble.