[Autumn]

Shared Pain can currently share the pain of instant death attacks like Divine Eyes, Eliminate and Moonlight Mercy's instant death proc, causing the summoner to take over 500k damage by sharing the pain with your youkai.

I somehow didn't think this was an intended reaction, so I raised it as a bug report first, whether Youkai being valid for instant death effects is the issue or if shared pain should be splitting attacks intended to deal 1 million damage to monsters.