This tag covers questions relating to either monstrous antagonists specifically, or all enemies of the player characters generally; which usage is correct varies depending on the traditions of specific games. Use as appropriate for the game in question.

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5
votes
1answer
403 views

Reverse engineering the Hydra CR

There is no info on the hydra traits "multiple heads", so i'm trying to reverse engineer it, here are my thoughs. Effective attack CR 8: Five attacks (1 per head), 10 damage each for an average of ...
7
votes
1answer
557 views

What kind of creature is a pre-Medusa?

In the 5e Monster Manual Medusa entry, it notes that before turning into a Medusa creatures live "like a demigod among mortals," and they possess "physical beauty, restored youth, immortality, and the ...
9
votes
2answers
280 views

Does a dryad's Tree Stride ability provoke opportunity attacks?

Tree Stride. Once on her turn, the dryad can use 10 feet of her movement to step magically into one living tree within her reach and emerge from a second living tree within 60 feet of the first tree, ...
5
votes
2answers
330 views

Does a spellcaster know when their spell has no effect?

Suppose a cleric casts Zone of Truth on a captured enemy. Unbeknownst to them, the enemy is a raksasha. Zone of Truth says (PHB, p. 289): You know whether each creature succeeds or fails on its ...
4
votes
2answers
145 views

Can a Stone Child, Half Dragon, or Killoren be infected with lycanthropy?

My campaign is eldritch and fantasy and there is a werewolf clan currently near the party. My players have said that they're immune to lycanthropy because of their PCs' races: A Stone Child. He says ...
4
votes
2answers
189 views

How do I create a custom monster to challenge my lvl 8-9 party? [closed]

I have been running a campaign now for roughly six months (we meet up twice a month). I currently have my party hunting for 5 dwarvish bells to bring a part of a floating city down to collect it the ...
2
votes
2answers
581 views

Is there a playable correlation between CR and level in 5e?

Let's say that I'm about to run a combat-heavy 3rd level one-shot for a group of players. Balance and challenge rating is still very important, but one of my players says he'd like to play a humanoid ...
10
votes
2answers
2k views

Are there faeries in 5e?

I'm currently doing a bit of a "Fairy of the Fountain" encounter in my game, and the only thing I need now is a reliable stat block for the fairy. You know... just in case. I opened up the Monster ...
8
votes
3answers
976 views

How can I make a monster weaker?

So I am DMing an open world campaign and my players are heading into this old ruins infested with undead. So far so good, I made the map, random encounters, traps, monsters, treasure. I have decided ...
0
votes
2answers
111 views

Multiheaded Monsters [closed]

Does anybody have a complete list of all multiheaded Monsters in DnD 3.5e? We got a vague description of a "multiheaded beast" from a witness in our current campaign and I'm trying to figure out what ...
6
votes
1answer
250 views

What can a Succubus do in the ethereal plane?

The question is regarding the succubus action etherealness Etherealness. The fiend magically enters the Ethereal Plane from the Material Plane, or vice versa. MM 285 While the succubus is in ...
6
votes
2answers
202 views

How much does Petrification Ray modify a monster's CR?

I'm working on a custom monster right now and I want to give it a Petrification Ray, as seen on the Beholder, as an action: Petrification Ray. The targeted creature must make a DC (8+Spellcasting ...
7
votes
1answer
258 views

What's the difference in lore content between the editions' Monster Manuals?

I own the 5E Monster Manual. I also have the Monster Manual I, code number 2009 from 1E. I can see the difference between these two versions but I don't know what the other editions' Monster Manuals ...
10
votes
1answer
211 views

Dealing with fractional CRs in the table on DMG 274

This has been driving me crazy as I've been trying to create monsters and NPCs for my characters to encounter in D&D 5th Edition. Say I've got an NPC with 48 hit points and Armor Class 16. That ...
3
votes
2answers
190 views

How to modify a bulette to challenge a level 10 party?

In my campaign, the PCs have been tasked with removing a group of bulettes from a mining claim. I plan on using standard bulettes as a lead-up to a 'boss fight' where I would like a larger (perhaps cr ...
8
votes
1answer
373 views

What source contains a vehicle made from a dead beholder?

A vehicle created from the corpse of a beholder, with the main eye and organs removed to make room for a pilot's seat, was published somewhere in 3.5 or 3ed Dungeons & Dragons. Does anyone know ...
8
votes
1answer
399 views

Can a basilisk turn another basilisk to stone?

Can a basilisk turn another basilisk to stone with its petrifying gaze? If yes: then I imagine that around any basilisk herd there should be many petrified basilisks. If no: then I'm thinking that ...
1
vote
1answer
122 views

What book describes consuming vials of vampire blood to pseudo-Rage?

I know I've ran across this in one of my 3.5 books recently and I cant remember the book or much about it, and am having trouble re-locating this. There was an entry towards the front of the book for ...
5
votes
2answers
479 views

Are Demons and Half-Fiends considered Evil Outsiders for Favored Enemy?

Favored Enemy: Outsider(evil) is slightly confusing to me personally because when you look under fiends and demons the succubus is under both. Which demon is under outsider(evil) is this an exception ...
3
votes
1answer
234 views

Are there sourced statements about what inspired the D&D Demogorgon visuals

Wikipedia states: Demogorgon is based on the invented, supposedly pagan god or demon Demogorgon, which was first spoken of by Christian scholars as a being whose very name is taboo. A creature ...
5
votes
1answer
114 views

Is an animated object destroyed when it “dies”

When an object is animated as per the "Animate Object" spell, or a similar effect, it effectively becomes a creature. This creature is listed in the Monster Manual as an "Animated Object". What ...
21
votes
2answers
555 views

Tarrasque: Rush & Jump Skill Interaction

Background I am having a little trouble wrapping my brain around the Jump skill. I want to plan a battle with my players and the Tarrasque; two of them have the ability to fly - and it does not. I ...
15
votes
1answer
741 views

Can animated dead have weapons and armour?

If I have put the time into creating some skeletons or zombies using the spell Animate Dead. Kept them active expending 3rd level spell slots can I equip them with items, like armour and weapons? ...
12
votes
2answers
321 views

Do PCs facing a group of harpies have to make multiple saving throws against their song?

Do PCs facing a group of harpies using Luring song at the same time make a wisdom saving throw for each individual source of the melody or is it a single roll, considering it's the same ability? Here ...
10
votes
2answers
1k views

Does a PC transformed into a slaad retain their mind, stats, and class abilities?

If the blue slaad hits you with his claws and you fail the save, what will happen for the PC when they are transformed into a green or red slaad? Will they keep their own personality, or will they ...
12
votes
1answer
179 views

Do giant-kin have a specific place in the Ordning?

In 5th Edition, the word Ordning refers to the hierarchy of the various breeds of giant. Among the so-called 'true' giants this order goes, from highest to lowest: Storm giants, Cloud giants, Fire, ...
5
votes
2answers
520 views

How can an object hide the fact that it is Animated?

I am currently designing an encounter with an animated ship carrying a massive cargo of animated objects. However, the entire thing loses its magic when all that a player needs to do in order to ...
2
votes
1answer
160 views

How can Constructs use Magic?

In Pathfinder I am currently trying to design a few encounters with a supposed ghost ship (actually a Colossal Animated Object) complete with a crew of Haunted Objects (again, Animated Objects), but I ...
4
votes
1answer
173 views

Can an animated cannon fire itself?

In Pathfinder I am currently trying to design a few encounters with a supposed ghost ship (actually a Colossal Animated Object) complete with a crew of Haunted Objects (again, Animated Objects), but I ...
4
votes
1answer
139 views

What is the space size of a Colossal Animated Ship?

In Pathfinder I am currently trying to design a few encounters with a supposed ghost ship (actually a Colossal Animated Object) complete with a crew of Haunted Objects (again, Animated Objects), but I ...
2
votes
1answer
327 views

How would removing tail spikes from a manticore affect its challenge rating?

One creature omitted from the 5th Edition MM is the Dragonne, and I have considered modifying stats for the manticore to create a 5E dragonne. Most of the changes would be cosmetic except for removing ...
13
votes
2answers
948 views

What language is reasonable for a Roper to speak or understand?

I'm DMing a published 5e campaign that has a Roper in it. The campaign book tells me... This seems all well and good, except in the monster's stat block its language is listed as '—', which I ...
14
votes
2answers
262 views

What happens to active spells on a black pudding when it splits?

Bob the wizard and his chums have encountered a black pudding and Bob has cast Slow on it to give him some time to run for it. However, helpfully, the next round the parties tank, Kevin the Barbarian, ...
1
vote
1answer
271 views

Some creatures have unbelievably high ACs in the 40s, but how is that even possible to hit? [closed]

I'm looking at creatures in the d20 SRD and seeing monsters that have really high AC, like 45. Is that the correct AC or is it supposed to be something else? And if it is correct, then how is anyone ...
8
votes
1answer
147 views

How to travel through a Thoqqua's tunnel?

In the 3.5 monster manual, it states It burrowing leaves behind a usable tunnel, albeit a small one with blistering hot walls. What does this mean in terms of game-rules? Would a medium creature ...
8
votes
3answers
443 views

Do monster stat blocks already include their feats' effects?

When looking up any monster in any manual, are the stat blocs modified relative their feats, or must you modify them yourself? (Example weapon focus gives +1 to att. roll) At the moment, I am DMing ...
6
votes
2answers
164 views

Do Charm/Hold Person or psionic equivalents work on Lycanthropes?

Is a Lycanthrope affected by Charm/Hold person or similar psionic powers? I see that it has the Shapchanger subtype, but I don't know what that implies here. Does that mean a human infected with ...
2
votes
1answer
85 views

What is a hit die, and how do I calculate monster HP? [duplicate]

I'm new and have the AD&D Monster Manual and Fiend Folio. I want to know how to calculate monsters' HP. Does 4 hit dice mean 4 HP, or 4 rolls of a die, and how do I know what die to roll if it is?
40
votes
2answers
6k views

What makes the Monstrous Crab so dangerous?

It was recently mentioned that the Monstrous Crab is generally capable of wiping out even a powerful 3rd level party. It seems to me that, lacking any anti-ranged capability whatsoever, it is ...
5
votes
1answer
862 views

When do monsters need to breathe?

I've been doing some work on monster design, and stumbled on a weird problem with monsters needing to breathe. In my current monster write up, I don't intend for breathing to be something that is ...
5
votes
1answer
994 views

What are the racial traits for mind-flayers?

I'm planning on making a Mind-flayer character for D&D 5e and need their traits. I need to know special abilities, stat modifiers, and other things needed for character creation. A site that ...
5
votes
1answer
219 views

What are Metal Kobolds?

I've recently purchased the Monster Codex for Pathfinder and found an interesting passage in the introduction to Kobolds. It reads that in rare cases, there are those born with metallic scales that ...
1
vote
1answer
79 views

Leveling up a creature from the Pathfinder Bestiary

I have been running a game for the first time and have generally had an experienced GM on hand to help (never done this before). I have an encounter coming up (it pretty much will be the very next ...
8
votes
3answers
2k views

Are there official stats for an Illithid “Elder Brain”?

During an episode of Critical Role, the PCs battle an Illithid Elder Brain. I tried to find out more about this creature for possible inclusion in a campaign, but it barely has a mention in the ...
9
votes
1answer
532 views

Can you kill a gargantuan monster from within?

Imagine that a party manages somehow to get inside a dragon turtle without injury to themselves (we have some plans using magic, but that's not part of the question). Once inside, could you kill it ...
2
votes
1answer
262 views

Is Multiattack included in the actions a new lycanthrope gains?

In the Monster Manual p.206, it is written: A character who becomes a lycanthrope retains his or her statistics except as specified by lycanthrope type. The character gains the lycanthrope's ...
24
votes
4answers
7k views

Are Legendary monsters in the Monster Manual ever able to be defeated?

I'm starting my first 5e campaign soon and I'm just learning about balancing encounters. While looking up challenge ratings I noticed a very troubling truth: Of 30 challenge levels in the Monster ...
4
votes
1answer
266 views

Can becoming a familiar make an improved familiar stupider?

The feat Improved Familiar (DMG 200) says that Improved familiars otherwise use the rules on page 52 of the Player’s Handbook, with two exceptions: If the creature’s type is something other than ...
9
votes
2answers
427 views

Whence the large difference in power between ogres and hill giants?

Ogres and Hill giants are both of Giant type and are described as very similar height: 9–10 feet for ogres, 10½ feet for hill giants (and they're both of Large size category). Yet their ...
3
votes
2answers
404 views

Why are constructs so hard to build?

Golems and other constructs have a long history in Dungeons & Dragons and its spinoffs, but, almost invariably, it's extremely difficult for PCs to create them, and they often have varying ...