Red beast drop bear and its minions doing seemingly 10x - 15x dmg

Zero damage mod map, on a build that was breezing through all non uber content(no insane gear, just a farming char).

https://www.youtube.com/watch?v=qHcGP_U-wrk

https://poe.ninja/poe1/builds/keepershc/character/SoluR-1051/MargeWithaCodexFive?i=0&search=name%3DMarge