Cave-in Crusher

Iwayado Kuzushi (Cave-in Crusher)
Ninjutsu (Doton) [Earth]
Rank: 8 (B-Class);
Range: Medium (20 ft. + 10 ft./2 extra chakra);
Area: 40-ft. radius spread (S);
Duration: 1 round;
Saving Throws: See text;
Chakra Resistance: No;
Chakra Cost: 10.

Similar to Jishin no Jutsu, the Cave-in Crusher is used exclusively to collapse the roof of a cavern or tunnel or cause a landslide on the side of a cliff. Creatures caught under the roof or the area of effect suffer 50 points of earth damage and must succeed a Dex save or be pinned beneath the rubble. A pinned creature suffers 10 points of nonlethal damage per minute, increasing by 5 every minute. If it falls unconscious, it must make a Str check (DC 15) every round or take 5 points of damage until freed or dead. If the area does not have a cliff, roof or similar structure, the technique has no effect other than a violent and brief earthquake that will cause creatures to fall prone if they fail a Dex save (DC 15).