Chaotic death spawns are monsters that the Nechryarch can summon when it is being attacked. They function similarly to their normal variants.
Chaotic death spawns appear in groups of 3, and each one attacks with their own combat style (melee, ranged and magic). They can hit up to 7 accurately - protection prayers will fully protect from their attacks. Chaotic death spawns will despawn once the Nechryarch is killed.