Is damage taken when falling off a mount?

The mounted combat rules provide a few scenarios for falling off a mount:

If your mount is knocked prone, you can use your reaction to dismount it as it falls and land on your feet. Otherwise, you are dismounted and fall prone in a space within 5 feet it.

The rules for falling state:

A fall from a great height is one of the most common hazards facing an adventurer. At the end of a fall, a creature takes 1d6 bludgeoning damage for every 10 feet it fell, to a maximum of 20d6. The creature lands prone, unless it avoids taking damage from the fall.

In either circumstance of falling off your mount (falling prone, or using your reaction to land on your feet), do you take any damage from falling? Does it depend on the size of your mount?

Very related: It seems obvious that if you are on a flying mount at height, and fall off, you will take some damage – but the answer to the question above will probably determine where you measure the fall distance from in such a scenario (square above mount/top square of mount/bottom square of mount/square below mount).

Can a readied action be taken after a spell is cast, but before it deals damage?

This question evolved from discussion in the comments from another Q/A: “Can you use Shape Water on Tidal Wave?”.

I’ve become unsure about how spells with a duration of “instantaneous” work. Specifically, do their effects also happen instantaneously?

An example where it matters:
If one readies the spell wall of stone and has the trigger be “when I see a fireball hurtling towards me I will block it with the spell”, when do they actually cast the wall of stone spell?

We know that readied actions occur after their triggers, but there are (at least) two possibilities.

  1. The effects of fireball happen instantaneously, so you could cast wall of stone only after every part of the spell, including it exploding and dealing damage.

  2. The effects of fireball happen in a timed order, so you could cast wall of stone immediately after any part of the spell, including the fireball coming towards you.

Can a readied action be triggered and taken after a spell is cast, but before it deals damage?
Which (if any) of the two interpretations above applies to spells with the duration “instantaneous”?

Is exposing enumerated id’s a bad idea if precautions are taken?

So say I have a website that has the URL{studentId}/courses for retrieving all the courses a student is enrolled in. And the studentId is an auto-incrementing value in the Student table I have in my database.

Obviously I’m securing my API and returning back 403’s if the user’s current session doesn’t match the studentId that they are trying to get the courses for. But, is it a bad idea to directly expose these studentId‘s, or any enumerated id for that matter? Should I just take a look at using GUID‘s or some other type of randomly generated string of numbers and/or letters?

DND 5eOath of redemption: Does Emmissary of Peace reflect damage taken from Aura of the Guardian?

Aura of the Guardian

Starting at 7th level, you can shield your allies from harm at the cost of your own health. When a creature within 10 feet of you takes damage, you can use your reaction to magically take that damage, instead of that creature taking it. This feature doesn’t transfer any other effects that might accompany the damage, and this damage can’t be reduced in any way.

At 18th level, the range of this aura increases to 30 feet.

Emissary of Redemption

At 20th level, you become an avatar of peace, which gives you the following benefits.

• You have resistance to all damage dealt by other creatures (their attacks, spells, and other effects).

• Whenever a creature damages you, it takes radiant damage equal to half the amount it dealt to you.

If you attack a creature, cast a spell on it, or deal damage to it by any means but this feature, neither benefit works against that creature until you finish a long rest.

Now obviously the damage couldn’t be reduced by Emissary but I can’t find if it should be able to reflect half of it.

On one hand, you are taking damage dealt by another creature, but on the other the creature isn’t attacking you, you’re simply taking the damage for someone else.

Payment taken without permission?

New to the forum, so hope I'm posting in the correct one?

My wife and I are going to the States next year, and needed to apply for an ESTA.
Unfortunately, my wife did this before me, and did it through the first site that google came up with.
They charged her £89 (ouch).

When I did it, obviously through the correct site, it was $ 14, so you see the so called company who my wife used went through overcharged her.
It made us think that we/she had been scammed.
So, my wife contacted…

Payment taken without permission?

Imprimir matriz para juego Taken

qué tal estoy comenzando a aprender a programar en java pero no se por donde empezar ya que no tengo conocimientos sobre la programación del mismo y espero que la pregunta, no sea muy obvia eso espero.La meta es hacer un juego de consola que haga lo siguiente, por ahora no me preocupo del diseño. introducir la descripción de la imagen aquí Por lo que pienso nada más crear una matriz hacer que el usuario elija que movimiento quiere hacer, hasta que llegue al movimiento o no. Pero tengo problemas al crear la matriz, solo quisiera que me la imprima aparte que tampoco me deja meter un caracter “X” en ella.

    // Llamo al paquete scanner para que me ayude, cuando ingreso por el teclado //import java.util.Scanner;  public class takenjuego {     public static void main(String[] args) {         //Tomare el juego como si fuera una matriz de n*m         //En este caso sería una matriz de 2*2         int n=2;         int m=2;         //Creación de la matriz          int A [][]=new int [n][m];         // Ahora tengo que llenar la matriz con las condiciones iniciales que tengo           A[1][1]=3;          A[1][2]=7;          A[2][1]=2;          A[2][2]=1;          System.out.print(A);     }     } 

Are there any balance issues in allowing two half-feats to be taken without the Ability Score Increase instead of a feat?

Some feats such as Actor and Keen Mind provide a single Ability Score increase along with some other benefits. These feats are sometimes called half-feats (and I am using this definition for this question).

Half-feats are sometimes difficult to incorporate into a build unless you plan ahead and even then you probably need to spend at least part of your adventuring career with an odd Ability Score.

In order to somewhat ease taking these feats, I was considering including this house rule in a campaign:

When you would gain a single feat, you can instead gain two half-feats but do not receive their Ability Score Increases. This counts as taking both feats for the purpose of being able to only take each feat once.

At first glance, this seems naturally balanced because the non ability score benefits of a half-feat seem to be equivalent to a single Ability Score Increase, meaning you are still obtaining the “value” of two Ability Score Increases.

One difference I notice is that this is a bit better for half-feats where the Ability Score improved is fixed (such as CHA for Actor). If you spend 1 ASI on 2 half-feats and then spend the next ASI to increase two ability scores, you’ve effectively taken two half-feats but gained the ability to reassign their associated ability score increases however you like1. I am okay with this benefit.

Am I overlooking any other benefits or balance issues that this house rule might introduce?

1. As written by Ryan Thompson who helped clarify this in comments.

Generate aerial image based on images taken on ground

I am trying to reconstruct aerial(top view) image of small area with photos taken by mobile device. Such as part of a street or other flat scenes. I want to use 3D reconstruction tools to process images then map the result to top view. How do I avoid error from highly dynamic environment (cars, people)? Or is there any other ways to do this?