my last 4 techniques

ok first one under my skin i have like all my bones form a very hard and thick layer of bones
making it hard to get hurt by sword kunais and stuff like that and also an extent of the jutsus to protecting me from some of the jutsus power

second one is i can make spikes stick out of my skin while i have the bone layer on

3rd is that i can control bones in the ground

4rth is that i have mastered my rinnengan and learned alot of fire,water,and lightning jutsus

i hope u aprove of them