Which school of magic is Mordenkainen most closely associated with?

Which school of magic is Mordenkainen most closely associated with? In particular, I’m not interested in speculation or opinions, but rather if such a thing has ever been outright stated in any officially released D&D material, or which can at least be objectively inferred from things like the sorts of spells he was most closely associated with.

He has made an appearance in a couple of 5e adventures:

Speaking of the spells he has created, in 5e there are four spells that include his name in the title:

  • Mordenkainen’s faithful hound (4th level conjuration spell)
  • Mordenkainen’s private sanctum (4th level abjuration spell)
  • Mordenkainen’s sword (7th level evocation spell)
  • Mordenkainen’s magnificent mansion (7th level conjuration spell)

The above might imply that conjuration is his “main” school of magic because he made a whole two of those, but I know that there is also a 9th level abjuration spell called Mordenkainen’s disjunction from 3.5e, which puts abjuration and conjuration on an even keel (or possible even that abjuration is the “winner” because that’s the highest level spell he made), so I’m not sure if this method of inference gives a clear answer after all (since I’m not limiting this to simply what is in 5e).

So, has there ever been any clear mention in any official material regarding which school of magic Mordenkainen is most closely associated with, or can it be inferred from official material if not?

For which class of graphs can a minimum sapanning tree always be associated to a shortest path tree?

Given a graph $ G=(X,E)$ with positive edge weights. We assume that $ G$ contains a unique min weight spanning tree $ T_{min}$ (this is true for example when for all the cuts, the edge with the minimum weight is unique). What is the necessary and sufficient condition that insures that the following holds: There exist a vertex $ x$ for which the shortest path tree obtained by starting Dijkstra from $ x$ coincides with $ T_{min}$ .

Is this homebrew trident weapon and associated feat balanced compared to the published weapons and Feats for Weapons?

Currently, the martial weapon trident is strictly inferior to the simple weapon spear. Here is my homebrew fix for it:

Trident (Martial Meelee Weapon) Cost: 15 GP Weight: 5 lbs
Damage: 3d4 piercing Thrown (0/15), Heavy, Two Handed, Special

Special: This weapon can be wielded with one hand if the other hand is wielding a net.

And its accompanying feat:

Trident Mastery
Prerequisite: Proficiency in tridents.

You gain the following benefits when wielding a trident:

  • You have advantage on attack rolls made with tridents while under water.
  • When you throw a net as an action, you can make one attack with a trident as a bonus action.
  • When you are attacked by a weapon that has the reach property and are not incapacitated, you can use your reaction to add your proficiency bonus to your armor class against all attacks from the creature that attacked you until the beginning of your next turn. If this increased armor class blocks the triggering attack, the creature must make a DC 15 dexterity check or drop the weapon.

Is this balanced compared to the official weapons? Does it have any “broken” combinations with any feats or abilities? Is the feat broken?

What is the distribution of Saving Throws associated with each attribute that are required by spells?

I read somewhere that in D&D 5e, the Saving Throw distribution for spells was biased towards DEX, CON and WIS. In other words, if you had proficiency in those attributes, you would benefit a lot more than having proficiency in other attributes.

What is the distribution of Saving Throws across attributes for spells in D&D 5e?

I’m looking for a percentage of each attribute for all the spells available (one would expect this to be uniform). Bonus points if this is also calculated for only spells that can be cast by RAW monsters (MM and VMG).

Risks associated with developers using their own domain for development services

We have some development and test environments being served of our canonical domain, e.g. dev.example.com. We also have some services using obscure domains names from 3rd party providers like xjkhasdkjvhas.dns.ashdfb.3rdparty.io.

The canonical domain is maintained strictly by our sys admins.

Furthermore some services are not served on port 80 which means any new instances need to be opened on our company firewall. And also some of these services have dynamic IP which also causes our firewall to need updating/scripting.

To clean it all up I’d like our developers to use their own public dns, e.g. dev.ex.io. They can then standardise easily memorable names for services, create reverse proxies with certbot for dynamically changing services on obscure ports and also clean up our canonical DNS so it’s only used for production services.

Are there any real risks associated with this? The only thing I can think of is a public domain will provide clues as to our company and what services lie behind the domain (but that’s already an issue with dev.example.com). As long as developers don’t use this domain for production services is there a problem with this approach?

Is there a publicly available source/ list of blacklisted emails or emails associated with malicious activity?

I want to build a simple tool that just checks if an email or email domain is risky or not.

Is there a publicly available list of risky emails that I can do a simple cross reference on?

For example, check if the email person@dangerous-hackers.com or the domain dangerous-hackers.com is on one of these lists.

Any ideas?

Are spells learned from feats considered to be associated with your class?

The multiclassing spellcasting rules (PHB p. 164, or here in the basic rules) state:

Each spell you know and prepare is associated with one of your classes, and you use the spellcasting ability of that class when you cast the spell.

According to the above, every spell you know or prepare should be associated with a class.

  • However, for spells learned from feats like Drow High Magic or Wood Elf Magic are these actually associated with a class?
  • If so, what class?
  • If not, is the PHB statement above wrong/outdated?
  • Are the spells learned in these feats (and others like it) associated with something else (like your race, in these cases)?
  • If so, does that have any mechanical implications?

For reference, the Drow High Magic racial feat (XGtE p. 74) states:

You learn more of the magic typical of dark elves. You learn the detect magic spell and can cast it at will, without expending a spell slot. You also learn levitate and dispel magic, each of which you can cast once without expending a spell slot. You regain the ability to cast those two spells in this way when you finish a long rest. Charisma is your spellcasting ability for all three spells.

The Wood Elf Magic racial feat (XGtE p. 75) states:

You learn the magic of the primeval woods, which are revered and protected by your people. You learn one druid cantrip of your choice. You also learn the longstrider and pass without trace spells, each of which you can cast once without expending a spell slot. You regain the ability to cast these two spells in this way when you finish a long rest. Wisdom is your spellcasting ability for all three spells.

In regards to the third and fourth questions, the fact that the PHB quote says “use the spellcasting ability of that class when you cast the spell” and the fact that the feats specify what ability the spell uses in these examples (independent of class) suggests to me that they are not associated with class.