I understand Madara being revived stronger than in his prime but this is ridiculous. I don't think Madara had Mokuton and Rinnegan at the time he fought Harashima. I think Madara lived beyond his fight with Harashima and developed Rinnegan shortly before his death somehow after gaining access to Harashima's powers somehow.
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Madara was strong already and 3 kage level ninja had to combo to get him with a rasen shuriken then rinnegan pops out. Okay that's the strongest ninja with seen so far. Then he throw down a meteor much bigger than Nagato's. Now he uses mokutan. He's basically an incomplete sage of 6 paths who they said was god like.