TL;DR: it prefers to target ferrous metal
This is likely a hold-over from earlier editions, which had this text in the 2e Monster Manual entry for Rust Monster:
Rust monsters, being none too bright, stop pursuing a fleeing party for one round to devour metallic items, such as a handful of iron spikes, a mace or a hammer, if the party throws them behind. ...
Monsters (or NPCs in general) don't make specific moves.
Instead, the GM will make moves whenever the players present a golden opportunity (amongst other things)
So if the PCs don't engage in combat, but keep looking at the GM, there'll be a progression of moves, probably something like this:
Show signs of an approaching threat
The hobgoblins you've ...
Up to the DM
There are no official creature weights in 5e, just size categories. Specific heights and weights are up to the DM to narrate to fit the story.
This DM would say it weighs what a normal bat weighs :)
But if you want to go with heavy bat, by all means do so! If that fits your story and vision, there is nothing wrong with it. And mechanically it ...
Lightning is a lot better than no lightning
Let's say the party deals an average of 20 DPR per character, the wizard either deals 10 damage with lightning or 20 without.
Without using lightning the Froghemoth deals 69.5 damage per turn, and dies in 2.3 turns for a total of 160 damage.
With lightning, the Froghemoth deals 26.5 damage per turn and dies in 2.63 ...
Yes, you can use it to force a re-roll, but it doesn't change the result.
It is important to note that Legendary Resistance does not change the actual number rolled on the die, nor does it change the fact that a die has been rolled in the first place,, it only changes the outcome of that roll.
When a creature with Legendary Resistance chooses to succeed on a ...
The creature must be present, as it's the one using the actions, not the lair itself
In the Monster Manual, p. 11, under Lair Actions, it says:
On initiative count 20 (losing all initiative ties), it [meaning: the monster] can use one of its lair action options. It can't do so while incapacitated or otherwise unable to take actions. If surprised, it can't ...
It keeps the modrons from doing things contrary to their instructions
But instructions are not infallible!
In the general description of Modron's in the MM:
Absolute Law and Order. Under the direction of their leader, Primus, modrons increase order in the multiverse in accordance with laws beyond the comprehension of mortal minds. Their own minds are ...
This is entirely up to the DM.
MM 9 (sidebar Armor, Weapon, and Tool Proficiencies):
Assume that a creature is proficient with its armor, weapons, and tools. If you swap them out, you decide whether the creature is proficient with its new equipment.
As noted in the comments, the only wrinkle here is attunement. If the weapon requires attunement to unlock ...
Bolts from the Grave should be able to affect a Rakshasa
As you've quoted, the Rakshasa's Limited Magic Immunity says:
The rakshasa can't be affected or detected by spells of 6th level or lower unless it wishes to be. It has advantage on saving throws against all other spells and magical effects.
Bolts from the Grave, although it requires a ranged spell ...
Begin and End With The Fiction
No-one on either side of the table really "makes moves". The moves come from what happens in the fiction, more specifically, from what the players have their characters do in response to that fiction.
From the SRD Gamemastering chapter, Principles section (emphasis mine):
Make a move that follows.
When you make a ...
You can make your monsters however you like
Originally, I was very into making consistent monsters where the hit points align with the size category and con modifier. Similarly, the calculation of save DCs. This is nice for published material. I do not do it anymore for my own games since it takes time but does not add any value. My players never get to see ...
I'd use Occam's razor to say he weighs the same as a normal bat. The reasoning for this goes:
He can masquerade convincingly as a normal bat. That's attractive to me as a DM for plot purposes. It means he doesn't stand out in a crowd of bats, and can follow and spy on the characters easily and naturally.
This means he needs to be able to land on things that ...
Changing the DC is consistent with monster modifying guidelines
In the guidelines for how to create a full monster statblock the DMG gives two options for setting monster save DCs. The first is to set a DC based on the monsters CR. The other option is to calculate a DC by using 8 + prof + appropriate ability modifier. (DMG, 278)
A monster might ...
There is another problem
Awaken does not state that the plant or beast mustn't be magical. It states that Int score must be low or missing. Since the tree has no indicated Int score this is fine.
However, Awaken works in creatures / objects huge and smaller, i.e. fitting in a 15 by 15 feet cube. I would definitely say that the tree is too large, even with ...
It doesn't say
Because the spell doesn't say, there really isn't a way to answer this either way and it becomes up to the table/DM to determine.
You can look at the argument of "it doesn't say it does, so it doesn't" or you can say "it makes sense to me that it does, so it will."
Awaken does not confer a soul, since spells do only what they say they do. Inferring from several things said in the rules, though, the game assumes living creatures already have a soul by default, which is why creatures like the ones you mention - zombies, golems and simulacra - must specifically be called out as not possessing a soul.
I base this on the ...
Once a humanoid has fully transformed into a mind flayer, the original humanoid is dead and their body is destroyed.
In the AD&D 2e sourcbeook Monstrous Arcana: The Illithiad, p.11, asserts that most normal means are ineffective at restoring their original form:
Ceremorphosis completely replaces the original tissue of the victim with illithid tissue; ...
A small amount of lightning damage is valuable
Shock Susceptibility is a huge debuff to the creature, equivalent to the 3rd level spell Slow, though only single target and shorter duration. This is definitely worth sacrificing some damage for.
Should you use high-damage lightning-based spells to trigger this effect? Only if you don't have another way to ...
The PC's don't have to engage in combat. They will respond to whatever is happening and sooner or later, something will trigger the moves snowball.
They just stand there? That's a golden opportunity with a GM move as a follow up. Make it as hard as you like.
They run away? That's Defy danger. If they miss, then it's your move.
The bard tries to talk them ...
You keep using that word*. I do not think it means what you think it means.
Your assumption that Strahd's weight would be unchanged seems to come from a misunderstanding of the text you quote, "His statistics...are unchanged."
You are interpreting "statistics" with the common English meaning of 'measurements of characteristics'. However,...
It would appear that illithids likely do have souls, and therefore can be captured in a Ring of Mind Shielding
Illithids themselves at least don't believe that they have souls
In Volo's Guide to Monsters, p. 80, under the Divine Magic subsection of the Mind Flayer chapter, it says the following:
Illithids acknowledge the existence of divine entities, but it ...
Once Legendary Resistance is applied, Chronal Shift has no trigger.
Chronal shift reacts to seeing whether the roll succeeds or fails. The roll occurs, you hear from the DM what the result is, and you use a power, which (probably) changes the roll.
Legendary Resistance reacts to failing the save. The roll occurs, the save is failed, and it chooses to ...
The Pit Fiend’s fear aura ability reads:
If a creature's saving throw is successful, the creature is immune to the pit fiend's Fear Aura for the next 24 hours.
You would only be immune to the particular pit fiend’s ability. An ability explicitly states if saving against it immunizes you against the same ability from all creatures of that type. For example, ...
Since there are no specific rules for fiends, they use the general rule.
A long rest is a period of extended downtime, at least 8 hours long, during which a character sleeps for at least 6 hours ...
Of course, if you don’t want fiends to sleep to rest in your world, then they don’t.
Almost surely worth it
First, let me introduce the simple math on the DPR change:
I will be assuming the party of 3 characters attacking it have +5 on their main attribute (i.e., the one they use to attack), as is usual, unless they have a way to further increase their DPR through feats (e.g. GWM or Sharpshooter). I assume all of them are using a weapon that ...
RAW, Lair Actions are actions taken by the creature.
Just using the Adult Red Dragon as an example, the Monster Manual says:
On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row.
If the dragon is not around to take actions, then RAW ...
You have to reduce their Intelligence below the threshold
You will need to reduce their Intelligence in order for this to work.
Wishcould potentially be used to do this, but may come with its own consequences for a request like that.
Here are a few more options.
Both of the options below require giving an NPC an immensely powerful item or arranging for a ...
Eating a Myconid Induces Plot-Relevant Side Effects
The consequences should depend on the narrative purpose of punishing the players.
In your question, you mention a kind of survivalism: the players know (or should know!) not to eat mushrooms, because they may be poisonious. From that I understand your goal is to reward players for demonstrating keen ...
It prefers ferrous metals
The Rust Monster description from a previous edition provides more details lore-wise:
It prefers ferrous metals (steel or iron) over precious metals (such as gold or silver) but will devour the latter if given the opportunity.
So it can corrode bronze, but normally it just doesn't want to.
In the given example, 2.5 rounds up because that's how rounding works in DnD 5th Edition when rounding up is allowed. In addition to the given example, the rule for rounding down also indicates that if it were not for the rule, one half would round up.
Round Down General Rule
Whenever you divide a number in the game, round down if you end up with a fraction,...