Definitely not on copyright grounds, since almost all state flags (except Georgia, Mississippi, and soon to be Utah) are old enough to have entered the public domain.

Most of what you read online is incorrect, then, or at least misleading. Willpower isn't actually a stat in D&D. When your character asserts their will, they succeed at doing so, full stop. The save is for whether or not the character has an opportunity to do so.

What you have instead are Intelligence, Wisdom, and Charisma.

Intelligence saves are how much your character knows. An example here is illusion magic. Illusions are imperfect, and better understanding of nuance lets a character see an illusion as false, and then exert their will to disregard it.

Wisdom saves are about how much you can perceive and intuit. When someone attempts to control you, it's subtle, and the saving throw is about noticing that something is wrong. Once you notice it, your character exerts their will and shrugs it off.

Charisma saves are about your force of personality and sense of identity. When someone attempts to possess your body, they are attempting to change who you are, and is directly opposed by how strongly you believe in yourself, and how strongly you believe in who you are. Once you resist the attempt, you then exert your will and drive the spirit out.

You would simply say "The spellcasting ability modifier for this spell is Wisdom."

Wisdom is the stat that represents your willpower, your experience, and your ability to perceive the world around you. If something attacks your mind, it is most often resisted with Wisdom for this reason.

Realistically, it probably shouldn't be a spell, and it definitely shouldn't be this complicated. Spells used to have this level of granularity in earlier editions, and 5e specifically moved away from that for clarity and speed of play.

My recommendation is to decide if the person this item was created for (not necessarily the PC using it) is supposed to die or not when using it. If they are, then the item just kills them. If not, they fall unconscious at 0 HP, then suffer one failed death save as normal when the item detonates. Don't mess about with charging it with death saves or exhaustion levels, just have it do some damage.

For SSD's, it's 100% a logical table, because data is stored all over the place for load balancing purposes, so it already uses a logical table to keep track of what each block is for at any given point in time.

For HDD's, historically they were physically separated, and they mostly are still, but there's still a logical table, and there's no reason the logical table can't say "Blocks 0 through 1234 and 2000 are part of partition 1" if you have something somewhere else that you want on that partition.

I just make sure there are some consequences, even if it's something like "There are other things that live in this dungeon you're camping in, and they just found the pile of bodies you've left strewn about and have raised the alarm."

I, personally, think this is a totally valid tactic, and wouldn't be upset if a player used it in my game. One of the first things we go over in Session Zero, though, is that your characters, while unusual, are not unique. Any BBEG worth his stuff is capable of scrying on your tactics and hiring a hit squad that can copy or counter your tactics.

If a player started doing this repeatedly and trivialized many encounters, maybe the next group has his own sorcerer that can do that, or knows disintegrate, or can teleport the big stompy guy into the obvious spellcaster's face. Cheese isn't an arms race the players can win.

From the other side: I'm pro-union, but at my workplace I'm management.

One of the guys on my crew is terrible at his job. Just awful. Everyone hates working with him, he doesn't get anything done on time, he's either stupid or willfully ignorant, the list goes on and on.

The union, however, has negotiated that I can't action for productivity. It literally doesn't matter how badly he does his job, as long as he's in his spot and something is happening, I can't do anything. On top of that, this guy has seniority over most of the other guys on the crew, so I can't even give him less hours without cutting the people who actually get shit done.

It's incredibly frustrating, and the only thing I can do is watch his attendance like a hawk in the hopes I can get rid of him for being late one too many times.

I think it's pretty safe to say that the two terms are unrelated, and that most people on a non-Japanese-speaking community would not make that same connection.

My solution to the pronoun game has always been to not worry about it.

At some point, the person having non-standard pronouns made a decision to have their pronouns not match their physical appearance, so it's up to them to communicate that difference in some other way. If they fail to do that adequately, there will be misunderstandings. Sometimes, that means they have to straight-up tell people when they meet them, other times it might mean a correction when a mistake is made. I've seen people wear buttons at social events, even, and I thought that was a cute solution.

If they want to be a dick about it, I now know that they're not someone I particularly want to be around anyway.

This whole incel concept confuses me. Are you telling me there are hordes of dudes out there so unlikable that they can't even pay a hooker for a handy?

A creature's statistics are everything listed in the stat block, which includes it's abilities.

I'd like to see a dungeon editor of some kind. Just give the community all their assets and see what they do with them.