Bone Trap Jutsu

Bone trap jutsu: The user sets a trap that, when traveled over by an unfamiliar or hostile chakra signature, will cause it to activate. A large pit fall will open up and whoever is travelling over it will fall into a large cavern lined with bones. The top of the trap then closes, sealing those within. Rank: C. Style: kekkei genkai. Chakra cost: 50 per trap. Range: 50ft radius centered within 100ft of user. Save: 12, Dex vs being restrained. Damage: none. Focus: none. Requirements: none. Enhancement: double radius. Minor Action