Selene is ignored in this fight. She will need to be interrupted during her phase where she holds her staff in the air and shoots poison.
As far as I can tell, she chooses one player which she will use a conal poison AOE on. This may be wrong, but she only targeted me during the fight. Just had to point it away from everyone and we were good.
Rinse and repeat when she summons the spider after the bear is killed.
![](https://s2.save4k.ru/pic/40fVHzMaQFk/maxresdefault.jpg)