Plot hooks sound great! It's really cool to see how new players confront these challenges that I've grown so accustomed to.
Is there an attack roll for this, or is it just an auto-hit if the Nishruu floats over a spellcaster? Auto-hit for such a powerful feature feels against the spirit of 5e.
Woof, I never even thought about Irenicus's dungeon still continuing even after it's inaccessible. Those poor, poor tube people Hopefully the power runs out soon...Even if we fall, our numbers are many. You would be overwhelmed.
This was me on my first-ever playthrough. I was so young and unfamiliar with game mechanics that when the magic missile wand started blasting, I just ran. Followed the dead thieves to the exit and missed the rest of that room. Weirdly, even though I've played it through 20 times since then, the rest of those rooms still feel so much more "new" to me. I don't know if that's just the power of a first playthrough or what.
Sidebar: thank you beyond words for not making katanas magically more powerful for no damn reason.