It's at least Bach's quincy power (cuz of the light-based design), but it might be mixed with Yama's bankai. It was as brutal as North (just cleaner).
For a man who did many impossible things in this series, he definitely has my respect. R.I.P. Yama-ji.
They should build a memorial for him. With giant statue and all, that youngsters will look on in awe for the next centuries.
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