Some Mobs in AQ - Spell Question

[al3xc1985]

Arygos https://www.wowhead.com/wotlk/npc=15380/arygos#abilities https://www.wowhead.com/wotlk/spell=25149/arygoss-vengeance

Caelestrasz k https://www.wowhead.com/wotlk/spell=25150/molten-rain

Merithra of the Dream https://www.wowhead.com/wotlk/npc=15378/merithra-of-the-dream#abilities https://www.wowhead.com/wotlk/spell=25145/merithras-wake

He is using this spell, what is this?

[al3xc1985]

This npc's as I read aren't they involved in War of the Effort event? And there is where they use those spells?

[insunaa]

these mobs each exist twice, once in the 10 hour war event where they're shown fighting some scarab things and then again as quest givers that do nothing except stand around inside of aq40 at the end behind cthun