Its pointless again Kaguya and JJ Madara because they would simply regenerate damage or avoid damage with limbo swap like Madara did.Ameno is insta kill when used properly like here
When you first charge your attack and then teleport ur target/urself, so they don't have time for reaction
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Obviously it had to be nerfed, and later on Sasuke was always teleporting first, then striking, like in your gif or here
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