Arcane Lord

The elemental plane after breaking through the material boundary is different from those elemental planes discovered by Shado before or by Netheril. Those elemental planes that can be called planes are still material planes in essence.

It is only because they have more extreme elemental tendencies that they are considered elemental planes. In fact, they can also become the source of elemental energy when casting spells, but they are not real elemental planes.

The real elemental plane should be a force or a rule located inside the material to support the formation of matter and even elements. It is the cornerstone of the existence of the world, not a specific plane.

The arcane fire is connected to such a real elemental plane, so it can break through the power limit of the magic network. Without talking about the volume, the essence of the arcane fire is actually the same as the magic network.

Both are special structures that can connect to the elemental plane to draw energy from it for the caster to use. The only difference is that the former is artificial, while the latter is natural.

When civilization develops and utilizes it, the natural one is not necessarily better than the artificial one, just like the difference between wild medicines and artificial synthetic medicines in Shado’s hometown. He actually trusts artificial synthetic medicines more.

After all, the synthesis path is determined, the relevant mechanism is determined, and even the side effects can be determined, while there are too many uncertainties in wild drugs. In comparison, synthetic drugs are more trustworthy.

The same is true for the magic net. The birth mechanism of the magic net in the natural environment is unclear, and there are still many unexplored rules. Compared with the magic fire that the caster "produces" from scratch, it is obvious that the magic fire is more reliable.

Various accidents may happen in the magic net, but as long as the production process and operation process of the magic fire are correct, the result will definitely not go wrong. This is the greatest value and advantage of the magic fire.

Even if it cannot compare with the natural magic net in some aspects, its ability to break through the magic net power limit and be sufficiently controllable is enough for any arcane master to use it as the best choice when casting spells.

All those who think that the magic fire is not good have not used it personally. Those who have used it personally and still say that the magic fire is not good can only be that the arcane master has problems himself, and he succeeded in the advancement by luck, but his understanding of magic is actually not worthy of the magic fire.

…

Shaduo turned into earth and stone to communicate underground. Even with the interference of ground vein radiation, the spell itself was still normal. This was the effect of the independent magic network controlled by himself. Even if he continued to go deeper, he was still not affected.

Not only the [Stone Walk] he cast himself, but also the [Wide Area Detection] activated by the robe of thought was not affected, because the robe of thought also had its own arcane fire.

Of course, the spell itself was not affected, but it did not mean that the effect of the spell on the outside was not affected. It was like shooting at wood and shooting at iron plates. Both can be shot, but the effect of the bullet is completely different.

In the underground environment, the effect of the detection spell on the outside will be affected. This has nothing to do with the spell itself, unless it is a guided spell. It is generally believed that the spell effect has no connection with the spell itself.

It is like an electrical appliance on the earth. No matter what environment it is placed in, as long as the circuit is not interfered with, the appliance will operate normally, but the effects it produces, such as sound and light, will change with different environments.

The stabilizing effect of the arcane fire on the spell is equivalent to the protection measures for the circuits of electrical appliances on the earth, which can be free from environmental interference.

Now, although the spell itself is not interfered with, the underground environment still has a very obvious impact on the effect of [Wide Area Detection].

Originally on the surface, [Wide Area Detection] was enough to cover the entire main plane. Of course, the farther the distance, the worse the detection effect.

But underground, [Wide Area Detection] first has a limited coverage range, and secondly, the decline of the detection effect becomes extremely exaggerated.

Xia Duo initially judged that the decline of the detection effect of wide area detection underground is mainly affected by two parameters, one is the range, that is, the straight-line distance from the source of the spell.

The other is the vertical depth.

The two parameters affect the detection effect of this spell at the same time, among which the range has a roughly linear effect on the effect, that is, the farther the distance, the worse the effect, but the effect decays more evenly.

However, the vertical depth parameter below the ground has an exponential effect on the detection effect, which will eventually approach zero infinitely.

Based on this characteristic, we can also roughly infer the detection limit of [Wide Area Detection] underground.

If the spell source point is placed at 0 altitude on the surface, then the detection range underground is almost a shape that covers the entire surface of the main plane, but converges rapidly downward.

The deepest detection depth is about 5 new miles directly below the spell source point, and other places are less than 5 new miles deep.

If the spell source point continues to go down, the detection range is almost the same, and the deepest place will not exceed 5 new miles from the spell source point.

This is uncomfortable. Even if the entire Elan area is scanned, it may not be able to reach the Underdark if it is only 5 new miles deep.

If the spell is cast on the surface, no matter where in the main plane, the spell source point can only be projected to about 5 new miles underground, which means that the limit detection depth of the [Wide Area Detection] spell is about 10 new miles.

The detection depth of 10 new miles underground is enough for war spells and any surface wars.

After all, it is already quite good for a conventional detection spell to be able to penetrate five or six meters underground, and 10 new miles is a completely overwhelming advantage.

But 10 new miles may not even be considered a layer of skin for the underground world that has not yet been explored to its limit and can actually be considered infinite.

In this case, if you want to detect deeper places, you either need to change to a more suitable detection spell for the underground, or you can only let the "caster" go underground.

In this case, Xia Duo has no choice but to choose the latter.

According to the different carriers of [Wide Area Detection], the corresponding one is to drive the floating city underground, or he can go underground in person with the robe of longing.

"I didn't expect that this trip in person was the most correct choice by accident!" Xia Duo couldn't help but sigh.

So he immediately took action, moving underground with the robe of longing, and became a veritable human detector.

...

On the other side, the Alliance mages in the rear, although they were involved in a considerable part of the local battlefield at the source of the time signal, still paid enough attention to the key clue that Xia Duo brought back from the bottom of the sea.

Soon, while Xia Duo was still moving back and forth underground acting as a human detector, the command network quickly synchronized the locations of several suspected Underdark passages that the method masters had preliminarily determined after analyzing the detection feedback data.