Board Thread:Theories and Speculation/@comment-25043344-20180527201340/@comment-34436445-20180614193855

He would be really powerful, at least twice as powerful as he is now. Madara said with both rinnegan he was alomst twice as powerful, same would apply to Sasuke. Sasuke's left rinnegan gave him two space time techniques. This is speculation but with a another, rinnegan he would acquire another technique either related to space time or something unique like limbo. Every rinnegan user ( at least Madara and sasuke ) had a unique rinnegan technique. The curse mark gives him senjutsu which with rinnegan will make him unstoppable. The curse mark maybe will buff the rinnegan and make it more potent.