If you cast a higher-level spell from a spell scroll with a casting time of 1 action, but fail the check, can you cast a bonus-action spell that turn?

The bonus-action spellcasting rule states (PHB p. 202):

A spell cast with a bonus action is especially swift. You must use a bonus action on your turn to cast the spell, provided that you haven’t already taken a bonus action this turn. You can’t cast another spell during the same turn, except for a cantrip with a casting time of 1 action.

The description of a spell scroll states (DMG p. 200):

If the spell is on your class’s spell list but of a higher level than you can normally cast, you must make an ability check using your spellcasting ability to determine whether you cast it successfully. The DC equals 10 + spell’s level. On a failed check, the spell disappears from the scroll with no other effect.

If you fail the check to cast the higher-level spell via the scroll, does the spell count as being cast despite there being no effect?

This question is very similar to this one – If a spell cast from a Spell Scroll is Counterspelled, is the scroll consumed? – but I am not sure if the answers in that question apply to this situation as well.

How to check whether given $k$ vertices make a $k$-clique in an undirected graph $G$ efficiently

Let $ G=(V, E)$ be an undirected graph with vertex set $ V$ and edge set $ E$ . Let $ V’=\{v_1, v_2, …, v_k\}$ be a subset of $ V$ where degree of each $ v_i$ is bigger than or equal to $ k$ . Is there a way to check whether $ V’$ is a $ k$ -clique more efficient than the brute-force algorithm in $ O(k^2)$ ? Thanks in advance.

How reliable is Virustotal’s file signature check?

I downloaded a setup.msi file from an untrusted website. Virustotal says it’s a signed file and valid signature, by the developer company and “GlobalSign Extended Validation CodeSigning CA” 3 times and also 3 times counter signed.


Does it mean, that the file is 100% the original file from the developer company and there is no way to tamper with it in any way, without breaking the file signature?

How likely is critically succeeding on a Recall Knowledge check to identify a creature?

Monster Hunter (Ranger 1, CRB p171) gives you a minor benefit if you critically succeed on a Recall Knowledge check to identify a creature.

Recall Knowledge only says

The GM determines the DCs for such checks and which skills apply.

I feel if I spend a feat for such a small benefit1, the success should be almost guaranteed.
On first level a typical Ranger’s Nature skill is around 5, all other identification capable skills are likely below that. At the same time an Easy Untrained DC is 8, the critical threshold is about 10 higher than “guaranteed”.

Do I miss something, or is this a very weak feat, at least until quite high levels?


1) it has 85% chance not to make any difference for you, and it takes a party of 5 to get this down below 50%

Is 33 the minimum skill check result for a multiclassed 11 rogue/9 artificer using Reliable Talent, Expertise, Guidance, and Flash of Genius?

  1. Any proficient ability check d20 roll of lower than 10 is set to 10 with the Reliable Talent rogue feature.
  2. +17 from the Expertise rogue feature (12 + ability modifier of +5).
  3. +a minimum of 1 from the guidance cantrip.
  4. +5 from the Flash of Genius artificer feature with 20 Int:

    Flash of Genius

    Starting at 7th level, you gain the ability to come up with solutions under pressure. When you or another creature you can see within 30 feet of you makes an ability check or a saving throw, you can use your reaction to add your Intelligence modifier to the Roll.

    You can use this feature a number of times equal to your Intelligence modifier (minimum of once). You regain all expended uses when you finish a long rest.

= 33? Am I stacking these right?

Can a system administrator check if their website is being scraped by a headless browser?

A recent article on scraping tiktok and Facebook states:

On the one hand running selenium headlessly is perfect to keep your machine “cool”, however it may help get you flagged as a scraper. System administrators can spot a headless request with ease.

The author uses a random User-Agent for each request, so I’m not sure where the logs would indicate that a headless version of a browser making the request. Are there any specific signatures to detect a headless browser?

Good faith effort on the question:

With foresight, it looks like one could check make a check for things like webdriver version (which can be spoofed too). However, by stating sys admins, the quote seems to imply that the logs themselves are sufficient to detect a headless browser.

Check ME Firmware Version

I just installed and executed the latest BIOS driver to my HP Elitebook 830 G5 PC. After all the installation process ended, how do I check the new BIOS version and also the new ME Firmware Version without going to boot menu>BIOS>System information>advanced system information ?

Is there any way I can check the info through command prompt ? I tried systeminfo, it only shows BIOS version but no ME Firmware version.

Thank you.

What is a grab check, and how does it interact with Strength, Fighting, and Elongation?

In the M&M 3E Hero’s Handbook, it says under Elongation:

In addition, Elongation allows you to wrap up and entangle an opponent so it grants a +1 bonus to grab checks per rank (limited by PL).

It says that a Grab makes an attack check, and then a resistance check against Strength. So, since Elongation is limited by PL, would it benefit an attack check or resistance check, and does that require me to reduce my ranks in Strength or Fighting to account for it with PL?