Magic blocking

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Magic blocking
by Robin
Pondering about Antimagic, or magic blocking (no matter the source of magic; be it Radiance affected Magic or older)
Canonnically we have the following;

# Item Effect Use Cost Durability

1 Gorgon Blood fully prevents magic from penetrating or affecting the affected surfac Mostly used in castle or city walls 2 qrt/10x10 yrd wall permanent

2 Lead ore bricks/powder fully prevents magic from penetrating or affecting the affected surface Mostly used in dungeons +5% material cost building permanent

3 Lead sheets fully prevents magic from penetrating or affecting the affected surface mostly used in seperate rooms and secret rooms 50gp per 100square feet. permanent

4 Goldsheet fully prevents magic from penetrating or affecting the affected surface rarely used, and only treasuries and personal rooms 5000gp/100 square feet permanent

5 antimagic zone Fully negates any active magic from functioning in the affected area rarely used 0, but has to be discovered in a suitable environment permanent as zone remains active

6 Baak Fully prevents any magic from affecting it or passing it used only to imprison an immortal by immortals incalculable permanent as long Baak exists

7 Antimagic ray beholder Fully negates any active magic from functioning in the affected area rarely used, can be used only by controlling a beholder by magic (like Control Death Tyrant) can't be estimated, varies greatly as long Beholder is "alive" and controlled.

I would add the following (based on the above and logic), or as it was hinted at canonnically;

# Item Effect Use Cost Durability

8 natural Gold Ore fully prevents magic from penetrating or affecting the affected surface, however due irregular spread 5% chance of having a hole which can be penetrated used only by dwarves for their treasure chambers/royal halls 0, but has to be discovered in a suitable environment permanent

9 Natural Lead Ore fully prevents magic from penetrating or affecting the affected surface, however due irregular spread 5% chance of having a hole which can be penetrated used only by dwarves for their tombes 0, but has to be found in a suitable environment permanent

10 A treasure hoard Any treasure hoard of gold would hide magical items underneath completely from any divination Dragons and treasure hoarders variable as long as the object is covered by hoard

11 Lead Paint fully prevents magic from penetrating or affecting the affected surface, however due irregular spread 5% chance of having a hole which can be penetrated used by merchants, mages and clergy is special rooms/containers 5gp/10 square feet surface as paint chips away renew every 10 years at best

121 Gold Paint fully prevents magic from penetrating or affecting the affected surface used by Royalty. mages and clergy is special rooms 500gp/10 square feet surface as paint chips away renew every 10 years at best

13 Gold foliage(extreme thin gold coverage) fully prevents magic from penetrating or affecting the affected surface used by Royalty. mages and clergy is special rooms 500gp/10 square feet surface as paint chips away renew every 20 years at best

14 Lead contamination fully prevents magic from penetrating or affecting the affected surface, however due irregular spread 5% chance of having a hole which can be penetrated used only where contamination is found(often near old mages towers, goldmines) 0, but has to be discovered in a suitable environment permanent, but in active natural environment may fade in 3d100 years.

15 Anti Magic Crystals (partially mentioned/suggested canonnically)Fully negates any active magic from functioning in the affected area rarely used as this is mostly unknown 1000gp/100cn crystal Permanent if natural grown, or 50% chance may have active duration of 1d100 years when uprooted to be used elsewhere(else permanent).

Keep in mind lead is a poisonous metals with very nasty side effects https://en.wikipedia.org/wiki/Lead_poisoning Save vs poison at +2 per use/contact.Treat it as a very slow poison which can't be removed by Remove Poison/Slow poison magic due its magic resistance, of 1 hp per failed con check made once a month and once a year a concheck to a prevent permanent -1 on con. Lead was also use in white face paint, water tubing so many of the populace would eventually suffer from it.(this was until the 90ties on the western real world still in effect, and globally it still can be found in more backward areas.
Anti Magic spells, although cannonically(Gaz3 and GKoM) mentioned I should place them here; spells like GKoM Sever the Tie blocks all magic use from the affected person, but this will logically also affect spells intended to affect the victim of the spell itself.as thus he can't be affected by that magic too.
However, as I suggested earlier, As all magic currently used is affected/influenced somehow by the Radiance, there exists (or at least did exist earlier) other forms of magic. spells like Sever the Tie (or the spell in Gaz3 hinted at in the law section) are based on the Radiance and thus would have no effect on other magic. When other magic will be (re)discovered, the mages affected by Sever the Tie or similar would be more eager to learn that magic to be functional as a mage again.
Some questions remain;
if canonnically Gold has such an effect on weapons coated with, how can it still be magical itself; Is it only the magic subsiding on the gold affecting only outwards?
Gorgons are Earth Elemental bulls, petrifying prey and devouring it afterwards.Estimating a 40-60 liter of blood within the creature this suggests many gorgons succeeded to enter the Prime Plane, or many Prime Planar hunters decimated the herds on the Earth Elemental Plane to extract the precious liquid, as it is often reffered to in canon sources.
As Greek mythologically Medusae are belonging to the Gorgons, would the blood of Medusae have a similar effect?. it would suit the resistances of Earth elemental Creatures have against magic. Yet would the any blood from an earth elemental creature have such a protective effect (even beyond death)?
And how about creatures with a natural born resistance of magic....an immortal's corporeal body for instance....several canon sources (bestiary of Dragons&Giants) suggest Immortal dragon components being the source of magic...or is this just like the effects dragonblood has of itself...instead immortal magic?.
Then my last question...
Would the blocking of magic also affect immortal magic or only mortal?.

#	Item	Effect	Use	Cost	Durability
1	Gorgon Blood	fully prevents magic from penetrating or affecting the affected surfac	Mostly used in castle or city walls	2 qrt/10x10 yrd wall	permanent
2	Lead ore bricks/powder	fully prevents magic from penetrating or affecting the affected surface	Mostly used in dungeons	+5% material cost building	permanent
3	Lead sheets	fully prevents magic from penetrating or affecting the affected surface	mostly used in seperate rooms and secret rooms	50gp per 100square feet.	permanent
4	Goldsheet	fully prevents magic from penetrating or affecting the affected surface	rarely used, and only treasuries and personal rooms	5000gp/100 square feet	permanent
5	antimagic zone	Fully negates any active magic from functioning in the affected area	rarely used	0, but has to be discovered in a suitable environment	permanent as zone remains active
6	Baak	Fully prevents any magic from affecting it or passing it	used only to imprison an immortal by immortals	incalculable	permanent as long Baak exists
7	Antimagic ray beholder	Fully negates any active magic from functioning in the affected area	rarely used, can be used only by controlling a beholder by magic (like Control Death Tyrant)	can't be estimated, varies greatly	as long Beholder is "alive" and controlled.