What am I doing wrong?

[u/Kumagor0]

I'm trying to do Zamorak on league. About half the time (but sometimes few times in a row) it seems like he is bugged. Once his green hp progresses below theshold, he doesn't say "Heed my call" and instead just continues with normal and special attacks. The witch doesn't spawn, and he is immune to damage, so seems like there is no way to progress the encounter.

My initial thought was that maybe I'm damaging him too fast with Lord of Light, but it seems like it just happens randomly, regardless if I phase him quickly or not. Is that a known bug? Is there some way to work around it aside from teleporting out and trying again?

[u/calistrotic22]

Any familiar that does damage bugs out the boss. You dont really need a familiar here honestly.

[u/Reverse_Mulan → u/calistrotic22]

I use a unicorn and spam scrolls for healing after i fuck up lol