Obsidian Spikes

Obsidian spikes: The user coats a large area in obsidian spikes. This area is considered very difficult terrain and any who step through the area are dealt +10 points of atomic damage per square moved and the area grows each round. The user can freely allow allies to move through the area without damage. Rank: C. Style: Kekkei Genkai. Chakra cost: 30 per round. Range: 60ft cube, +20ft per round. Save: None. Damage: 10 atomic per 10ft square moved. Focus: Yes. Requirements: One free hand. Enhancement: Doubled range. Minor Action