erd is a very skillful ninja ,has masteres his elements.earth and earth properly,he knows some sealing techniques ,he is great to taijutsu,ninjutsu,genjutsu,smarteness,handseals and also good but not so much because now he is very old at stamina,speedness and strength.....although that he was a very good ''foe'' for orochimaru,and he was a big trouble to handle him...but pain...he has rinnegan...he has masteres all 6 elements (earth,water,sky,fire,lightning,yin & yang) and he has the 6 paths of pain so only manipulate them to fight and not himself....sorry sarutobi but u are not woth a s*** in pain!!