Are creatures aware of the effect of Mirror of Life Trapping?

The Mirror of Life Trapping can trap creatures in it.

Any creature other than you that sees its reflection in the activated mirror while within 30 feet of it must succeed on a DC 15 Charisma saving throw or be trapped, along with anything it is wearing or carrying, in one of the mirror’s twelve extradimensional cells.

Does the creature even know it’s making a save for something? If it doesn’t, then it’s likely my players will stand around for a while and I’ll call for multiple saves. Otherwise, they’ll probably look away very quickly.

Is the target of Sanctuary aware of the spell effects?

I am playing a Cleric and regularly use the spell Sanctuary on low life teammates while telling them to back away to safety (short call so I can heal them up and they will stop attacking and avoid breaking the effect).

I had one time when I had to choose whether to say to my Sanctuary target to run away or alert another character from a danger that only my character perceived. I choosed to alert my target but it lead our Wizard to be critically stabbed (he’s fine, merely a flesh wound)

So I was wondering, is the target of Sanctuary aware of the spell effect or should I continue telling them not to break the effect ? If they are aware of the effect, do they just "feel protected" ? Do they also get the intuition that being harmful to another creature will break this protection ?

Is a caster of Gentle Repose aware that a creature under the effects of Feign Death is an invalid target?

Alice (a wizard) & Bob (class unspecified), are planning an elaborate prank on Carol (a cleric). Alice casts Feign Death on Bob, and then wails about how he has been slain by a horrible monster/curse/whatever. Carol, who is, for some reason, friends with these jerks, comes running. Carol does not routinely prepare resurrection spells; instead, she casts Gentle Repose on Bob to preserve him for tomorrow, when she will prepare an appropriate spell to bring him back to life.

Is Carol aware that Bob is not a valid target for the Gentle Repose spell (since he isn’t actually dead), either before or after attempting to cast the spell?

From the PHB, p140:

Feign Death

You touch a willing creature and put it into a cataleptic state that is indistinguishable from death. For the spell’s duration… the target appears dead to all outward inspection and to spells used to determine the target’s status. ….

From the PHB, p215:

Gentle Repose

You touch a corpse or other remains. For the duration, the target is protected from decay and can’t become undead. …

Is a lich aware of its phylactery being destroyed?

Let’s say the party who are going up against a lich discovered where its phylactery was and how to destory it. They manage to get to the phylactery without the lich knowing about it and destory the phylactery.

Would the lich be aware that its phylactery had been destroyed? Is there anything in any official D&D publication that states whether or not a lich would know that its phylactery had been destroyed? I’m playing 5e, but lore from any previous edition is welcome if 5e doesn’t have any information on this.

How aware are Forgotten Realms characters of the underlying mechanics of the world?

I have read Are casters aware of spell slots?, but this question is aimed at the mechanics in general, not just spell slots

In our own world, there are millions of people working around the world trying to understand every detail of the world. We have distilled the most basic of physical laws into mathematical formulae, separated every element known to man in the tiniest of particles, measure every aspect of the world and have created experiments that are so delicate that the morning dew on the grass outside the testing facility can throw off results. We’ve even created a global infrastructure meant to share that information for the betterment of all.

Now, I might be overestimating the inquisitiveness of the inhabitants of Toril, but I would be surprised if the Arcane Scholars of Candlekeep or the Red Wizards of Thay or any other of the many academic groups in the Forgotten Realms aren’t investing a large amount of time into working out the mechanics of their world. Stuff like the damage a spell does or the amount of damage a kobold or gibberling can take or the increased potency of an Adamantite improved longsword or any other game mechanic. They might even be going into the deeper statistics of the world, like wanting to quantify how much better one fighter is compared to another, and end up figuring out the Strength/Dexterity/Constitution/Intelligence/Wisdom/Charisma abilities. And maybe, just maybe, they have stumbled upon clues that everything in Toril depends on random chance that a character can have limited impact on.

In our world, a lot of these details don’t really matter as much: it might improve our society in the long run by allowing us to create better technology, but we’re not really going to get better food by improving the accuracy of the Avogadro constant. However, in a magical world where a lot of things revolve around combat, knowing that Magic Missiles do up to 4 damage each and how many of these you’ll probably need to finish off that ogre can really mean the difference between life and death. And knowing just how strong each of your soldiers are and how much stronger each of them will get from that enchanted sword your court merchant bought from an adventurer can end up drastically changing the course of a war.

So I’m wondering: How aware of game mechanics are the NPCs of Toril, and especially the smarter ones who do the magical research or are in positions of power? Are they actively using this knowledge in their quest to improve the world? Is it even possible that someone created a compendium of the entire world that explains this in detail, and is selling this book to enterprising adventurers? And yes, I am alluding to the possibility of the Player’s Handbook being an in-game resource people can buy and read.

Is a creature aware that a Hex or Hunter’s Mark spell has been cast on it?

Both spells have a verbal component when casting them, but they can both be cast from 90 feet away, possibly from stealth or while the creature is distracted, so it may not notice the casting.

I’m sure the creature would feel the disadvantage to the chosen ability from Hex (would feel/be clumsier if Dexterity is chosen, or short of breath and tired if Constitution is chosen, etc), but might not know the cause. And would an actual mark appear on the target if Hunter’s Mark is cast on it?

Would they maybe need to pass an Arcana check (or passive check, maybe) to discern/notice what’s affecting them?

If I’m currently on a website and disable my VPN, is my ISP or the web server immediately aware of the change or does a page refresh have to occur?

For example: I’m browsing my favorite website with my favorite VPN enabled. I disable my VPN while I’m still on a page of the website. I haven’t clicked any links yet, I haven’t went back to the previous page, I’m just on the page, touching nothing. At this point, are the web server and ISP now aware of this change? Or does a page refresh / new request have to occur?

If I had to guess, it would be no, because it would be theoretically the same thing as viewing the webpage and disconnecting your internet completely. Am I on the right track?

Can Nerveskitter be cast during a surprise round, let’s say directly when you are aware that you are being ambushed?

  • Let’s say my group is ambushed and no one is aware, the ennemies then have a surprise round against us.
  • As soon as I am aware of the attack (they could jump/charge in front of us, shoot an arrow AND hit someone (could be me), cast a spell and I could hear it with a very good listen roll etc.) can I cast Nerveskitter or is no action allowed at all?
  • Take note that in 3.5 Nerveskitter states:

    (…)Unlike other immediate actions, you can cast this spell while flat-footed(…)

So with all this info, if I was to have a contingency spell (Celerity) with the condition: Whenever I cast Nerveskitter: Activate.

What would happen? I would be able to act right away, then the rest of the surprise round would happen (let’s say I’m immune to daze or I resisted with the Quick Recovery feat) then what?:

  • Do I start first and I do not need to roll initiative?
  • I still need to roll for initiative?

RAW answers if possible (FAQ, 3.X, I would normally allow pathfinder as well but nerveskitter was nerfed in pathfinder)

SPARQL Aware Security Assessment Tool [on hold]

What are the best vulnerability scanners for an RDF database that uses SPARQL? I like the credentialed scanning in Nessus, but the results are not very valuable, I think because it does not know what to do with the DB. I am trying the WMAP module in Metasploit, but do not have much faith in it. I feel like the market for graph databases is only now gaining traction, so is there anything even available for assessments?