Black Secret Technique: Black Iron Phoenix

Secret Art: Black Phoenix (黒鳳, Kokuhō) is a ultimate defensive and offensive technique developed by Ningyou Uzumaki a genius of her generation who invented this after seeing her sisters Lava Release: Phoenix Ascension. this gave the courage she needed to aid her sister in the air fighting side by side becoming the phoenix herself but on a lesser scale.

this form allows the user to encased him/herself in thick plate of black iron and metal forming a smaller sized phoenix that is pale comparison to the makazekage's. the phoenix in its own way is nearly indestructible being able to take blows from enemies but would remained intact but only lightning release techniques can utterly break through its strong defense. the black phoenix can enhance any known magnet release technique or create new ones to aid it in battle.