Curse mark release

Name: Curse Mark release. Description: The user has been imbued with corrupted nature energy, by releasing this energy the user gains enhanced strength and deals more damage than usual. Bonus 1: User gains +3 power and deals +10 damage on all attacks and techniques. Bonus 2: ???. Bonus 3: ???. Chakra cost: 20 per round. Requirement: D rank senjutsu.