Once Conjure Animal ends, do all animal body parts disappear?

I was reading about poisons when I stumbled upon the “Serpent Venom”. In short, you can harvest the poison of a Giant Poisonous Snake and then use it on weapons / poison edibles. I was wondering, if I use Conjure Animals to spawn eight Giant Poisonous Snakes can I harvest their poison and store it or will it disappear once the spell ends?

The spell description states that:

Each beast is also considered fey, and it disappears when it drops to 0 hit points or when the spell ends.

I would guess that means all parts of the animal will disappear but I would like some clarification before making any plans.

Is it decidable whether Turing Machine never scans any tape cell more than once when started with given string

The problem:

Is it decidable that the set of pairs $ (M,w)$ such that TM $ M$ , started with input $ w$ , never scans any tape cell more than once.

How can I easily prove above to be decidable. I found following proof confusing:

enter image description here

How is $ l+m$ is upper bound on number of steps? I feel we should be doing at least $ l\times 𝑄\times \Gamma\times\{𝐿,𝑅\}+1$ steps ($ Q$ being number of states,$ \Gamma$ being set of tape alphabet, $ l$ is string length, $ L$ and $ R$ are head movement directions).

Can a Symbol spell affect the same creature more than once?

The Symbol spell says:

Once triggered, the glyph glows, filling a 60-foot-radius sphere with dim light for 10 minutes, after which time the spell ends. Each creature in the sphere when the glyph activates is targeted by its effect, as is a creature that enters the sphere for the first time on a turn or ends its turn there.

Many of the options for what effect the symbol has when triggered have durations much shorter than 10 minutes (e.g. Stunning), or are instantaneous effects (e.g. Death). If I choose one of these effects, does that mean that it can affect the same creature multiple times? For instance, if I choose Stunning and a creature is stunned for one minute, then, assuming no one else moves them, they will still be within range of the spell at the end of that minute, and the spell will still be active for 9 more minutes. Does this mean that as soon as they recover from being stunned, they have to make the saving throw again? For that matter, does a stunned creature have to continue making saving throws every turn to see if the duration of the stun gets reset to 1 minute? Also, if they make the first save but cannot leave the area on that turn, do they have to make another saving throw on the following turn, or does the first save mean that they resist the effect of the spell entirely?

Similarly, if I choose the Death effect, do creatures in the area take the 10d10 necrotic damage every single turn until they leave the area?

Obviously, the answer to this question has a significant bearing on how powerful the spell is, especially if combined with other traps that limit creatures’ mobility.

Can Surprise occur more than once in an encounter in 5e? [duplicate]

This question already has an answer here:

  • How often during combat can you be Surprised? 2 answers

I was in a game where we were fighting a Hook Horror. Playing an Assassin Rogue, I was in Stealth and the passive perception (or active, for that matter) of the Hook Horror* couldn’t meet my Stealth (Move Silently) check. As a result, I gained a single round before the rest of the party arrived to initiate combat with the Hook Horror in the Surprised condition. It called out, echoing through the tunnels and summoned more which were to arrive in a few turns. We dispatched it before reinforcements arrived, during which I rolled another Stealth (Move Silently). The next round came up and the reinforcements arrived. I was at the top of the initiative and got to go first and asked the DM if the new Hook Horror would be considered surprised as well, since it still couldn’t beat my Move Silently stealth. Mulling it over for a few seconds, she decided that it would, in fact, be surprised as it had not yet been part of combat.

My question is, what would your ruling on that situation be? Initiative never technically dropped, but the enemy in question was not present until after I had a chance to reposition silently to get the jump on them.

Obviously, this has already happened and won’t change that it did, but for future reference, I’d like the input of some fellow rule nerds about how this should play out. The rules state that a Surprised creature cannot act on its first turn of the combat encounter, so the argument in question is, if a creature enters combat later than the original first round, can it still be surprised by one or more players who have opted for stealth?

*I know Hook Horrors have hearing-based blindsight and advantage on hearing-based Wis(Perception), but my stealth was a specifically a move silently check as we were in the Underdark and my character was a Drow with (rolled for) knowledge of such things, as well as other species/races having darkvision that would nullify a traditional Hide check.

Why aren’t distributed computing and/or GPU considered non-deterministic Turing machines if they can run multiple jobs at once?

So we know a nondeterministic Turing machine (NTM) is just a theoretical model of computation. They are used in thought experiments to examine the abilities and limitations of computers. Commonly used to dicuss P vs NP, and how NP problems cannot be solved in polynomial time UNLESS the computation was done on the hypothetical NTM. We also know an NTM would use a set of rules to prescribe more than one action to be performed for any given situation. In other words, attempt many different options simultaneously.

Isn’t this what distributed computing does across commodity hardware? Run many different possible calculations in parallel? And the GPU, does this within a single machine. Why isn’t this considered an NTM?

How do I make this saves macro for Roll20 work while only asking for the type once?

I’m trying to create a saves macro for DnD 5e in Roll20 that asks for the type of save once and then specifies which save type it is.

For example expected output may be “Lucy rolls a [19]/[10] for a strength save!” where [] means it’s a formatted dice roll with modifiers. I have a working macro but the issue is I have to prompt for the save type twice. Once for the type so it can pull the modifier and once for specifying the save in chat.

My current working code is as follows:

@{selected|token_name} rolls a [[1d20+?{Save|STR, @{selected|strength_save_bonus}|DEX, @{selected|dexterity_save_bonus}|CON, @{selected|constitution_save_bonus}|INT, @{selected|intelligence_save_bonus}|WIS, @{selected|wisdom_save_bonus}|CHA, @{selected|charisma_save_bonus}}]]/[[1d20+?{Save|STR, @{selected|strength_save_bonus}|DEX, @{selected|dexterity_save_bonus}|CON, @{selected|constitution_save_bonus}|INT, @{selected|intelligence_save_bonus}|WIS, @{selected|wisdom_save_bonus}|CHA, @{selected|charisma_save_bonus}}]] for ?{Save_type|STR, a strength|DEX, a dexterity|CON, a constitution|INT, an intelligence|WIS, a wisdom|CHA, a charisma} save!

I can’t reuse Save as the second prompt because it just gives the stat mod (“Lucy rolls a [19]/10] for a 5 save!” where 5 is my STR save mod.)

How to set the Y position of Camera to another object’s y position, but only once, not continuously?

Essentially, I want to set the camera’s Y position to another GameObject’s Y position, but I only want to do this one. If you do

cam.transform.position = new Vector3(0, thing.transform.position.y, 0),

it will continuously update to that object’s y. Even if I store the Y float in a variable and set the camera’s y to that it still continuously updates. It is only supposed to happen once.

Multiple If Operations at Once (DnD)

In my game, I want to have it so that if a chess piece tries to move farther away than a certain distance it won’t work. To do this, I need it to have an if statement that works between two numbers, but I can only seem to do above or below a number, not between. Is there a way to do this, or am I going to have to use to if statements?

Will copying an SSD once a year be beneficial or detrimental?

I was thinking of copying all of the data on my SSD (or at least the non operating system partitions) once a year for data retention. However, I was wondering if the chance of bits being copied wrong will outweigh the change of bit rot.

I have enough room on the SSD to copy the partition and then delete the original.

So is the bottom line that it’s beneficial or detrimental?