Mag's Cavein

I don't remember this ever happening before during a Magtheridon kill, but last week when Mags shattered the walls and the roof collapse occurred (for 5k), I got knocked down, which was immediately followed by a 10k crush. Admittedly, I wasn't topped off when the collapse happened (had a 5k deficit), so the additional 15k damage just killed me. I was wondering if doing a bubble/cancel during the collapse as MT would even be possible? Was I just unlucky, or was the fact that I wasn't topped off what killed me?
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You don't want him to turn. Trust me.

Just tell your Healers to keep you topped off all the times, especially before the cave-in, and you should be fine.
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