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Questions tagged [3d-space]

For questions that primarily involve calculations, coordinates, and movement within the imagined 3-dimensional space of the game world.

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13 votes
4 answers
3k views

What counts as ground for Tenser's Floating Disk?

What counts as ground for this ritual, if you have a 5x5 piece of stone/paper/metal/wood under the disk, and that is moved up, say 10 feet, would the disk phase through that stone, or hover 1 foot ...
Kedearian's user avatar
  • 841
16 votes
1 answer
2k views

Can you fly over a Medium enemy creature in a 10ft tall corridor?

Let’s say you, a Medium character, are in a 5ft wide, 10ft tall corridor, and that a Medium enemy creature stands in your way. You wish to go behind the enemy creature using your fly speed (either ...
Gael L's user avatar
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4 votes
3 answers
563 views

How do I handle targeting and areas of effect in 3-D?

I'm totally OK with regular grid and counting squares for purposes of movement, spell and weapon targeting, and determining areas of effect. Area shapes neatly match with measurements made square-by-...
annoying imp's user avatar
  • 3,383
3 votes
1 answer
200 views

How large is the whirlpool when a Nereid uses their Shape Water (Control Water) feature?

The nereid from The Hidden Shrine of Tamoachan has a special feature called "Shape Water" (not to be confused with the shape water cantrip), which does the following: Shape Water. The ...
MikeQ's user avatar
  • 31.6k
32 votes
4 answers
9k views

How many copper coins fit inside a cubic foot?

I have a Wizard who is level 5, currently running in a pirate campaign (homebrew), and I thought about some scams I could pull to earn the ship some extra coinage whenever we touched port to resupply ...
Bookwyrm's user avatar
  • 1,327
23 votes
4 answers
18k views

How do I calculate the volume of a given quantity of coins?

Question A rectangular chest is filled to the brim with 1,000 unevenly piled gold coins, each weighing one third of an ounce. How big is that chest? Is there a formula I can use for routinely ...
Pink Sweetener's user avatar
29 votes
5 answers
11k views

How can I effectively map a multi-level dungeon?

My players are getting awfully close to entering a multi-story pagoda dungeon that exists in my game. I think it'll be a fun adventure, but I find that I am worried about trying to map it all out for ...
Kron's user avatar
  • 423
19 votes
2 answers
3k views

Does Evard's Black Tentacles only go "up"?

Recently, I was running a game where the party was flying in an urban environment to face off against a wizard. They were all bunched together next to a building about 20' up to avoid attacks from ...
joedragons's user avatar
  • 2,964
14 votes
3 answers
5k views

Does flying upward cost more movement?

Let's say an Aarakocra, with a native flying speed of 30ft, starts to fly upwards. Does her 30ft flying speed bring her to a height of 30ft or does moving up 1ft cost more than 1ft of available ...
Sent_'s user avatar
  • 2,006
12 votes
3 answers
967 views

Does blade barrier have to be anchored to the ground?

If I cast blade barrier, does it have to be anchored to the ground? Or can I have it float anywhere I want that it could occupy, such as cast it above me as a sort of roof of blades?
Kedearian's user avatar
  • 841
10 votes
1 answer
2k views

Does the Evard's Black Tentacles spell affect the 5-foot cubes above its area?

I'm playing in a Tomb of Annihilation game, and there were some succubi that we were fighting. We had information ahead of time that a lot of them were grouped up together talking to someone, and so I ...
Borris the wizard's user avatar
9 votes
3 answers
3k views

Can archers bypass partial cover by arcing their shot?

There are two basic ways an archer fires at a target. In close quarters engagements, archers (and anyone using a projectile weapon) would likely use "direct fire", ie. fire at an angle ...
Andrendire's user avatar
8 votes
1 answer
4k views

How high can the Black Tentacles spell reach?

The spell Black Tentacles does not say how high they can reach up. Could it grab some Stirges that fly over the area of effect for example?
David Allan Finch's user avatar
7 votes
3 answers
2k views

What is the volume of one Alchemist's Fire?

After a heated argument about the size of a flask of alchemist's fire with my DM, we've reached the ruling that any and all alchemical splash weapons are one ounce vials because he's sure he read that ...
HadesHerald's user avatar
6 votes
2 answers
2k views

Is there a limit on the volume of material that can be affected by the Minor Alchemy class feature?

PHB Page 119, Wizard, School of Transmutation, Minor Alchemy: For each 10 minutes you spend performing the procedure, you can transform up to 1 cubic foot of material. After 1 hour, or until you ...
SurrealAnalysis's user avatar
5 votes
5 answers
1k views

Do creatures occupy cubic space, or are larger creatures still one square tall?

Does a large creature need to squeeze to fit into at 5' tall passageway?
Simon Withers's user avatar
4 votes
2 answers
4k views

Aerial combat in 3.5e

I have a player who is using a homebrew flying race to add to his heal/buff cleric's survivability. He's promising not to use it too much to his advantage, especially because none of us have any ...
George Booth's user avatar