Certain-Kill Ice Spears

Ninjutsu (Ice);
Level: 	B (6)
Hand Seals: 	None
Casting Time:	1 Standard action
Range: 	Short Range (50ft)
Area: 	50 ft Sphere
Duration: 	Instantaous
Saving Throw 	Reflex
The user unleashes giant spikes made of ice, capable of piercing through a cottage.
On a failed reflex save, this technique deals 10d6 points of piercing damage + 2d6 every 3 caster levels. A successful reflex save reduces this damage by half.