Would you allow this in your DnD game? What about the PH+BoH arrow of destruction?

I like this. Probably going to have the BBEG in my campaign create one as his ace on the hole for when his forces lay siege to the royal capital.

On the other hand having an entire story arc about the PCs tracking down and stopping the BBEG's wizard subordinate from building one would be a cool concept.

More arrows? Ballista bolt? Cannonball? Grapeshot? Immovable Rods? Telefragging?

Yeah there would probably be a very serious chance of detonating yourself and your immediate surroundings when making one.

I see this as a true madman's weapon. Something you won't considers unless the situation is so dire you either die fighting or risk dying to the contraptions you're making to win.

I would. Once. If they have the resources for more, I am clearly doing something wrong, but this is now a game about magical global thermonuclear war.

It wouldn't work, because a portable hole is made of cloth....which will happily sit right on top of the mud, without ever sinking.

Sorry.

But the mud would flow into the bag of holding, taking the portable hole with it.

>But the mud would flow into the bag of holding, taking the portable hole with it.
That's not how a bag of holding works.

Sure I'll allow it, players will never spend that much on a single-use item so I don't have to worry about them actually doing it.

It is how gravity works though. Hence why the shell needs to be elevated by at least 45 degrees.

mfw i know players who would still try this and make this their character's only goal in the game

Oh, you mean TURNED 45 degrees.

Jamming a portal through a portal creates a field in which two separate spacial coordinates are overlapped. All spacial systems must be reversible; however, overlapping portals result in a single point connecting to multiple locations. The result is either annihilation of any matter in contact with the double point (converted to energy and transmitted to both exits) or a loss of portal integrity.

I mean, people still tried to make the petard work.

Because the book says it does you dummy

I can see this being used more in deep mining than in combat.

One blast and BOOM, you have a good start for a mining seam.

>a ten-foot-radius spherical hole is a good start
That's an afternoon's work. You telling me you'd waste all that gold on magical items just to save a few hours? There isn't even a concussion so there's no cracks or faults made to follow up on, you're literally just skipping a few feet.

What adventures can we brainstorm up around this?

PC team makes one
>Finding someone who knows about it
>Convince that person to help
>Secure materials
>Build the thing
>Escort it to deployment point

BBEG makes one
>Gather intel on weapon
>Track down shipment of materials
>Intercept materials and/or personnel
>Infiltrate and destroy/sabotage weapon before completion
>If completed, fight through enemy siege to weapon before it's activated

Anything else?

" If a portable hole is placed within a bag of holding, it opens a gate to the Astral Plane. The hole, the bag, and any creatures within a 10-foot radius are drawn there, the portable hole and bag of holding being destroyed in the process."

It says nothing about materials.

Don't forget all the issues of keeping it secret and safe, on both sides. Gives lots of opportunities for things to go wrong/be discovered/cause political drama.
>Keeping all entities involved in building it sworn to secrecy....possibly by whatever means necessary
>Secure/secret place to deliver materials/build the device
>Containment systems/devices for both materials and final product
>Contingency plans if it goes off during construction
>Keeping shipments secured/secret
>QA/Testing without the enemy knowing about it (Or don't remind your players/BBEG of this and let them "test" in production for extra fun)

>Trying to Make this in a DnD game.
>Not just playing a sci-fi game where you can have 20mm grenade scale fusion shaped charges detonated by microscopic amounts of antimatter as anti-tank weapons.

Nothing wrong with the concept.

DO NOT QUESTION THE BOOK

This shit doesn't work at all, anti-magic doesn't affect the sphere except for rods of cancellation.

Do these exist in Athas?

Neither Dispel Magic nor Mordenkainen's Disjunction are anti-magic.

Antimagic Field isn't Dispel Magic or Disjunction.

At the same time however, there is no such thing as 'antimagic runes,' nor is there any statement saying that antimagic can be used to displace the sphere of annihilation. My assumption would be that, like other magic that enters the antimagic field, any area of the sphere that exists in the antimagic field is temporarily deleted until it is no longer covered by the antimagic field.

>anti-magic runes
>have a wizard cast stone to mud on it

I think I see a flaw

>with that stuff somehow focused and channeled?
Look into silversmiths and glassblowers.

I wonder if you could have fun running a sort of "logical conclusions" DnD campaign where you just resolve interactions in a "yeah, that's probably about what happens" sort of way.

There's probably some fun to be had bullshitting pseudo-realistic physics into a DnD campaign.

Putting a Portable Hole into a Bag of Holding doesn't make a Sphere of Annihilation, dummies. It just catapults everything within 10 feet to the Astral Plane.

It's like you've never even read the rules.

Peasant railguns and jumplomancers for example.

Meanwhile the multiverse is looked after by the all powerful pun-pun.

ONLY if the campaign is going full mad scientist, and the players expect shenanigans back.
They're SO getting a reanimator making a peasant railgun out of zombies...

This looks like a very, very expensive setup to make a 10 feet hole. I question its worth.

I mean its a portable hole, if portals were so weak and flimsy you wouldn't be able to carry it around, fold it or anything.

Really the portable hole would just be moved into the bag of holding portal and come out on the other side.

I guess i'll drop a story.
It involves the party flying an airship to escape a group of air pirates under the campaign villain's control.
Now, for background, the important dramatis personae are as follows:

Toby, eldritch artificer played by yours truly.
Axel Goodmountain, dwarf-raised human vampire hunter played by the group's minmaxer.
Havindir, a rare example of a well done wizard DMPC formerly played by a friend of the GM's who moved away midway through the campaign.
For reference, the airship we were escaping on had a laser-based thaumic artillery cannon planted on the upper deck.
This was a very Final Fantasy campaign.
Another thing to note, Axel Goodmountain was literally a Belmont, down to wielding a holy artefact whip with the soul of his dead wife keeping the holy wards running.
Along our adventure, Havindir kept crafting permanent portals into churches and inns and linking them together into his own personal portal network prior to the player moving out.
By the time we stole the airship, we'd visited a floating island city literally closest to not!Heaven, with all the sacred ambience it involved.
In total, the network contained...
-27 churches
-5 monasteries
-2 good-aligned god's personal domains
-57 city inns.
-277 roadside inns
-8 random holy sites where the old player forgot to cancel the portal.
-10 random spots in not!Heaven itself, results of experimental portal magic.
-1 portal to hell.

(cont'd)

So, the story. As we're desperately trying to get our ship to move faster, i get this idea of using the artillery cannon to slow down the enemies.
Problem is, the cannon is depowered. So instead of doing the smart thing and looking below deck for charge packs, i have our wizard buddy line up the solar powerplant in the floating city with the cannon's power socket using portals.
The appropriate spells are cast, portals are opened and the plant is plugged into the cannon.
We check values, take aim and fire (flinging the ship ahead by fifty meters as we do) and look on in deep disappointment as the shot barely slows the pirate dreadnought down.
Havindir notes it's crackling with dark energies, and reasons we should channel the beam through holy sites.
A few more spells later the pirate captain boards the ship, intending on duelling our party face so he can capture the ship.
While he's clashing with our paladin, Havindir and i finish up our portals and fire again.
The machine coughs, sputters, and fires straight into a portal, with the beam coming out from another portal somewhere under the ship aimed back at the dreadnought.
GM picks up a few dice and goes:

I think my favorite abuse of portable holes in warfare is using them to re-enact Project X-Ray. Do you have any idea how many flaming bat skeletons you can cram into a 10'x6' column? Three portable holes filled with them could probably toast an entire large city.

>GM: Okay, i'll humor you. Roll for ranged damage at -1 penalty for lack of weapon training.
>Me: I got a fifteen.
>GM: Ouch, tough luck. The dreadnought weathers the beam like a mildly stronger wave-
>Me: Hang on, i didn't add my modifiers. There's Thaumic Theory for +3, scroll of clear head gives +2, my background in artillery design works out to a whopping +4.
>GM:...a few hull panels break off, but the dreadnought...
>Axel: Wait, did you remember to add Havindir's modifiers?
>GM: ...the bow of the dreadnought gets blown off in a blast of energy, but the ship continues...
>D: I just got off the phone with [Havindir's player]. He says Havindir would probably try to use energy straight from not!Heaven.
>GM: ...the hull of the dreadnought is all but erased by the beam, but some vestige...
>Axel: Now probably isn't a good time to mention how i snuck my wife's soul from the whip to the cannon for safekeeping...
>GM: *anguished wilhelm scream*

In the end, we ended up blasting the entire ship to bits and the raw holy energy straight from not!Heaven amplified by the solar powerplant and several trips through consecrated ground ended up redeeming the pirates, turning the lot bar the captain into angels in the most literal sense. Unfortunately, it also destroyed the cannon utterly. So utterly, in fact, that Axel's wife's soul escaped it and was found unable to bind with anything anymore. So now we've got a random pirate captain as our swabbie, the evil empire is royally pissed at us, several theocratic kingdoms want Havindir to build a faith beam cannon for them, the Horseman of Death is chasing us to reap Axel's wife, and Axel's angry at me for destroying the cannon and setting his wife's soul to danger. All in all, a good idea.

>turned
It's a bullshit-magic howitzer; he meant "elevated", and you should be ashamed for trying to correct him with such grossly uninformed knowledge.

>the weapon exists
>theres no defense for it

Any organization significantly advanced enough to create a weapon like that would arguably be advanced enough to create a defense against it as well. It's pretty unlikely the weapons would be anti-anything except personnel, especially given how you're confining these measurements to human functions like "20mm grenades" and "tanks".

Hycanpidid???

Don't tell our DM, we've used hole-in-bag grenades twice now reliant on the 'destroyed' misinterpretation.

in ad&d 2 ed, we found that our antagonist used a portal made of two big magical mirrors. i got them and used as a defensive weapon against flying creatures for my castle. i dig a deep pit with stone to mud; put one of the mirrors in the pits bottom; the other in an plattaform attop the castle that you can point against a flying enemy; drop through two rails giant stone harpoons (made with a reversed mud to stone spell) into the pit, they exit the other mirror, acelerated by gravity.
you have a giant automatic stone thrower (well, a harpoon thrower)

...

We've got nukes RL. What defense is there against those besides convincing someone not to use them?

Doesnt work. The effect of combining those two items is a rip in the material plane to the astral. Its not an explosion or a wave of energy, its an unstable accidental portal.

So 1: antimagic runes wont stop it or shape it, because while a portal can be created with magic the portal is not itself made of magic. The portal just eats the devices and everything else around it as normal.

2: even if you did use the right magic to contain it, you would stop the portal from opening and it would just halt at its current size, not shoot out the front

3: You cant cast stone to mud on the plug. You sealed it behind a wall of antimagic runes, you fucking idiot.

Shooting them down before they reach their target.

Believe it or not quite a bit. Much like any other "blast" weapon there's a multitude of defence against them. Go to /k/ and ask. I'm at work.

I wasn't aware tried was spelled with a c these days

I believe in the acronym the c stands for considered.

Does it? Couldn't they have also just fucked up the acronym with a random letter?

How do you cast magic on the stone?

magic

Nope. It's a magic breakdown of space and matter. It makes a sphere of destruction. Antimagic adamantium gets consumed and dumped into astral plane.

If even it did not consume the cannon portion, the sphere of destruction would only extend as far as it normally would.

It's an utter breakdown of physics, there is no situation in which you can better control the the event then sphere of destruction.

My DM doesn't allow crafting of any kind. Items and objects are always spawned into the story as complete objects by NPC's, and can only rarely be upgraded by other NPC's. Anything created from the deterioration of objects (broken swords, cloven heads, severed limbs) and elements of the environment are non-interactable.
Yeah he doesn't get pen-and-paper gaming very well.

This is the only intelligent post in this thread so far

It wouldn't. spergs are just tryharding again

But the stone is covered in anti-magic

Well, we've had a few posts saying that less succinctly. I mean, it's just pretty obvious you didn't bother reading the thread.

Except where the portable hole is. The casing might be magic-protected but it is still open in one end.

I meam, why would I? It's a garbage thread made by clueless shit-spewers much like yourself, whose subject is fuck all and no DM would allow this tryharding horse shit. Good day sir.