Things I swapped out specifically for this fight
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Frostblink for lightning warp. Cooldown on frostblink is too high for his otemba phase. Shield charge isn't fast enough after a few of those phases.
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Woke spell cascade for anomalous conc effect. Needed more damage than coverage as I was barely getting 2 overlaps with woke cascade on.
Edit : POB - https://pastebin.com/NWQACqMW