Tornado Blast Technique

Gufuudan no Jutsu (Tornado Blast Technique)
Ninjutsu (Fuuton) [Wind]
Rank: 3 (C-Class);
Range: Medium (20 ft. + 10 ft./2 levels);
Area: 10-ft. radius burst;
Saving Throws: Reflex half;
Chakra Resistance: Yes;
Chakra Cost: 4.

Every creature caught in the area of effect suffers 25 points of wind damage, half on a successful Reflex save.

Empower
The user may spend an additional cost of 4 points of chakra to increase the damage by 5 die, up to 10 per level or 40.