Would this work?

[reapersaurus]

Bottom line, don't waste anymore of your time on this sillyness.

You don't understand - this kind of 'sillyness' is exactly the wine and song of what the IR is all about!

Umbran - good call - I was going to point out that bit about teleportation.
It's amazing how many people still believe that teleportation affects non-creatures.

 

[ConcreteBuddha]

"However, a tiny Gate that could take only a small - say, one inch in diameter - ball of steel
could be made permanent with the Permanency spell.

Now, imagine throwing this Gate upon a flat disc of steel.
Making the little Gate permanently.

Now, imagine two such flat discs of steel, each with a Gate cast on them, and permanency.

You cast Reverse Gravity on the glass, twice.
You then cast Permanency on the glass, twice.

Now, Reverse Gravity is only a 7th level spell.
If a 7th level spell can negate gravity, there is no question that 7th level magic could alter
gravity over a specific area, to a specific extent.
This effect, could be made permanent.

9th level magic could alter gravity much more yet, over an even greater area yet.
Or, alter gravity very greatly, over a tiny area.
And this, too, can be made permanent.

Would the above, work?"

That's a lot o' Permanency spells there, buster...

"The DM may allow other selected spells to be made permanent... If the DM has already determined that the application is not possible, the research automatically fails." PHB pg. 234

The spells you stated as being made permanent are not on the list on page 234.

If your DM is a pushover and allows you to Permanency every spell in the book, then yes, the above would work.

However, may I suggest a better alternative?

Permanent Summon Monster IX

Infinite numbers of outsiders who do your every command. That's kinda neat. And you don't have to go destroying innocent little crystal spheres...

 

[Umbran]

Umbran - good call - I was going to point out that bit about teleportation.
It's amazing how many people still believe that teleportation affects non-creatures.

You know I'm tired when I miss soemthing even more obvious - Teleport (and, by extension Teleport without Error and Teleportation Circle) has a weight limit. Even if you did use a non-creature version somehow, the spell will not support large relativistic masses. Without going into Epic rules, the spell will only support about half a ton.

That will limit the teleportation-trick damage - a half ton mass, moving at about the speed of light will profide enough energy to... turn a block of ice roughly 350 feet on a side into steam. This will vaporize soft targets (including the tarrasque or kaiju, though the tarrasque will regenerate), and devastate individual buildings or city blocks. But you probably won't level cities, much less kill planets. Nice for clearing your sea-lanes of icebergs, though.

 

[Umbran]

Oh, I forgot something else. Edena's device is not portable. It cannot be "moved about at will". I think Edena did not read the description of Reverse Gravity closely enough.

For one thing, Reverse gravity will only make things fall up, not in any old direction. The device will function only when the gates are perfectly aligned along the local up/down line, or the ball will wander off the path, and the device will fail, possibly violently.

Reverse Gravity accelerates the ball up. What happens when you set off the device? What does the ball hit? All the ball's momentum is upwards. The ball flashes into the sky at the speed of light, far exceeding a planet's escape velocity. Based upon Reverse Gravity, the thing can't actually target any object that isn't directly overhead. If you want to break a hole in a crystal sphere, this might be useful. But it won't hurt anything on the planet.

Let's say that Edena's wizard creates the spell "Generate Gravity" instead. He can arrange so that the field accelerates the ball from one gate to another, no matter the orientation of the gates.

What happens if you start this mechanism and the ball's path is horizontal (or anything other than perfectly vertical)? Well, the local planet's gravity still pulls the ball down. Again, the ball quickly deviates from the prescribed path, and the device fails.

Let's say the spell negates local gravity, so we don't have to worry about that deviation. What happens when anyone rotates, or moves the device along a line other than the ball's motion? The relativistic ball has a heck of a lot of momentum. The device moves sideways, and the ball doesn't. Again, it fails. The thing cannot be moved after the ball begins to accelerate.

 

[Gaiden]

Gaiden says: finally someone has figured out how to make a DND nuke.

Seriously though, if any character wanted to ever even come up with this idea I would rule they would have to have the skill knowledge (physics) or some such knowledge that is relevant and set the DC for the check to even come up with this idea to something like 80. I say that because that check is not wholly impossible. 20th level character has 23 ranks, with item that can give up to +40 on any skill, with intelligence enhancers, something like this would be conceivable.

Moreover, such a thing is so powerful, that it would attract the attention of the GODS! Beware mortal wizard, for you tamper with things beyond your control. I mean, holy shiz, I would imagine that such an item, could even rip a black whole in space. You could destroy whole universes. If that does not get the gods' attentions I don't know what would.

Ultimately, I say allow it, if you are going to go with the logic of enhancing the spells the way you mentioned, and treat it like nuclear warfare - because it is so dangerous, no one, not even the GODs want to unleash that kind of power.

 

[Zhure]

20th level Sorcerer. Needs Craft Wand and to know Forcecage* and Shrink Item**. Make Shrink Item Wand. Optional: Ring of Sustenance; Teleport; Stone Shape.

Make several Wands of Shrink Item. Arrange for boulders cut into cubes of 40 cubic feet. Stone shape would be helpful here if you want to be completely self-sufficient.

Begin using the Wand to Shrink one boulder per round to 1/2000th of it's volume. Each boulder takes up .02 cubic feet. Create 50,000 of these shrunken boulders, which takes 83 1/3 hours, or about 3 1/2 days. This is where the Ring of Sustenance comes into play, so you can cast straight through without resting.

You'd of course need 1,000 wands of at least 4th level, which is prohibitively expensive, but this is just a thought exercise. (1,000x4x3x750 = 5,250,000 gp.)

Now take all these cloth boulders and stack them up, then cast Force Cage around the entire group. Get to a safe distance and say the command word to end the Shrink Item spell(s).

The entire mass of 50,000 boulders will expand to it's original volume of 2,000,000 cubic feet, but it is compressed to a volume of 1,000 cubic feet, because the force cage isn't susceptible to non-magical damage.

The forcecage will last for 40 hours, which should give you enough time to make an escape, as the density of this "device" will be staggering. (This is where Teleport is useful.)

I leave it to the physics experts to figure out what would happen.

Realize of course that this is magic, so normal physics may not apply, but I think this is more doable than the reverse gravity/teleport jink.

Greg


*Forcecage

Evocation [Force]
Level: Sor/Wiz 7
Components: V, S, M (see text)
Casting Time: 1 action
Range: Close (25 ft. + 5 ft./2 levels)
Area: Barred cage (20-ft. cube) or
windowless cell (10-ft. cube)
Duration: 2 hours/level
Saving Throw: None
Spell Resistance: No

This powerful spell brings into being an immobile cubical prison with bars or solid walls of force (the character's choice).

Creatures within the area are caught and contained unless they are too big to fit inside or can pass through the slits in the barred cage. All spells and breath weapons can pass through the gaps in the bars. Teleportation and other forms of astral travel provide a means of escape, but the force walls or bars extend into the Ethereal Plane, blocking ethereal travel.

Like a wall of force spell, the forcecage resists dispel magic, but it is vulnerable to a disintegrate spell, and it can be destroyed by a sphere of annihilation or a rod of cancellation.

Barred Cage: The barred cage is a 20-foot cube with bands of force (similar to a wall of force spell) for bars. The bands are a half-inch wide, with half-inch gaps between the bars.

Windowless Cell: The cell is a 10-foot cube with no way in and no way out. Solid walls of force form its six sides.

Material Component: Worth 1,500 gp, consumed when the spell is prepared.

**Shrink Item

Transmutation
Level: Sor/Wiz 3
Components: V, S
Casting Time: 1 action
Range: Touch
Target: One touched object of up to 2 cu. ft./level
Duration: 1 day/level (see text)
Saving Throw: Will negates (object)
Spell Resistance: Yes (object)

The character is able to shrink one nonmagical item (if it is within the size limit) to one-twelfth of its normal size in each dimension (to about 1/2,000th the original volume and mass). Optionally, the character can also change its now-shrunken composition to a clothlike one. Objects changed by a shrink item spell can be returned to normal composition and size merely by tossing them onto any solid surface or by a word of command from the original caster. Restoring the shrunken object to its normal size and composition ends the spell.

If shrink item is made permanent (see the permanency spell), the affected object can be shrunk and expanded an indefinite number of times, but only by the original caster.

 

[hong]

Now take all these cloth boulders and stack them up, then cast Force Cage around the entire group. Get to a safe distance and say the command word to end the Shrink Item spell(s).

The entire mass of 50,000 boulders will expand to it's original volume of 2,000,000 cubic feet, but it is compressed to a volume of 1,000 cubic feet, because the force cage isn't susceptible to non-magical damage.
[/SIZE][/i]

Sounds like some horrific Acme device made to torment Wile E. Coyote.

 

[Magus_Jerel]

save yourself the 5 mil -
take shrink item as an innate spell if possible...

Place boulders into expendable container -

Cast fly spell

Cast Teleport on expendable container and yourself

Cast levitate on expendable container- then back away as far as possible.

cast dispel magic...

Watch bunch of boulders expand and fall down on target below.

 

[chilibean]

The theory of relativity has no place in a fantasy setting with magic.

For those that wish to think up devastating weapons from bizarre combos of D&D magic and real physics, make a gate that unattended objects can pass through freely, but not gravity.

Then simply open it to the center of a blackhole or a neutron star. The infintely small black hole would simply pass through the gate and consume the entire world and surrounding solar system. The neutron star would create an explosion of almost incalculable power (depends on the size and duration of the gate).

Suppose that you time/space warp exactly 1 second into the past to a distance 1 light second away rotated 180 degrees around. The light bouncing off of you would exactly reach "yourself" at the moment you warped. Then, it would warp back with you, and travel to hit yourself again. And again. And again. So the same photon traveled the same distance an infinite number of times. An outside observer would thus see a beam of infinite photos (& thus infinite power) suddenly appear between 2 points 186 thousand miles apart. Since infinite energy has infinite mass and thus infinite gravity, the entire universe collapses onto the beam destroying the universe. Sounds like something Raistlin would do ...

 

[sepulchrave]

3 Troll Points, Edena.