Instant Death

https://imgur.com/a/Z8TUdMI

Something instantly killed me my merc my AG and all my spectres. Nothing in the game including ubers and max map mod t17s has even got close to that. I think it was a bug but here is the place map.
The report number is 4019430247

I had a Veritania, the Redeemer shrine (and some other shrines) and just started a wild mercenary fight.