Okay this chapter has proven that even the ETERNAL MANGEKYOU SHARINGAN: the eye which "never loses it's light" CAN lose its light when using Izanagi/Nami... But something has confused me: when Madaras eyes evolved into the rinnegan, it regained it's sight. So this brings me to a question which I think is pretty stupid but I just wanna make sure: IF a standard tomoe Sharingan uses Izanagi, if the users eyes upgrade to a mangekyou Sharingan, do they regain their sight? And does it happen if the user gets an Eternal Mangekyou Sharingan too? I doubt it. But if that did apply. That would mean the Uchiha could give death a big middle finger 3-4 times!