What you know about Kyuss-Valaara-Katashka so far …
Katashka the Gatekeeper
- Condition Immunities: charmed, exhaustion, frightened, paralyzed, petrified, poisoned
- Damage Immunities: necrotic, poison
- Other Abilities: limited magic immunity (as rakshasa), truesight
- Extra: can force creatures to make a Constitution saving throw to give them vulnerability/loose resistance to necrotic damage on a fail
Valaara the Crawling Queen
- Condition Immunities: blinded, charmed, frightened, poisoned, prone
- Damage Immunities: poison, psychic
- Other Abilities: magic resistance, regeneration, truesight,
- Extra: contacting her telepathically, or dealing psychic damage to her forces your character to make an Intelligence saving throw against being stunned
Kyuss the Worm that Walks
- Condition Immunities: blinded, charmed, exhaustion, frightened, grappled, paralyzed, petrified, poisoned, prone, restrained, stunned
- Damage Immunities: necrotic, poison, psychic
- Anathema: most cleric, druid, paladin and ranger class features won’t work against them
- Other Abilities: superpowerful worm-sorcerer, that also can draw from Katashka’s & Valaara’s power
- TPK Incarnate: if you don’t debuff them fast, your heroes won’t stand a chance
How to Debuff Kyuss-Katashka-Valaara
every debuff-option listed below works only once
- unleashing the Talisman of Annihilation (Charged) on them
- hitting them with the Rod of Seven Parts (Rod of Law)
- using the Self-Sacrifice option from the Relight my Fire homebrew story award (see above)
- successfully using a cleric’s Divine Intervention feature to self-sacrify that character
- successfully banish them
- … there might be other options (read as: crazy player ideas)
The Stars Are Not Right Yet
Lalia (by @Jackfruitchilli), Hewguard (by @PatrickD), Dom (by @PlayerofDom) and Hogar (by @Stracci) have access to this homebrew story award.
During the final fight one of those characters can use an action to scream “Tenser! Now!”, for him to unleash powerful magic to change the nightsky. This would give every playercharacter in your group the benefit of a short rest.