What does it take to "participate" in the Aegis of the Hearth ritual?

[lvgreen]

Interesting. That might be the solution.
I will have to crunch some numbers first.

[callen]

Go back to my post linked to in the OP. I went into some detail on items. There is no clear-cut answer. I addressed stressing different parts of statements and possible results.

[Christian_Andersen (Christian Rosenkjaer Andersen)]

@loke

The key rule is this.

Effects from enchanted devices are resisted by the Aegis unless the item was within the Aegis at the time of casting, or was created within the Aegis by someone who was part of the ritual or in possession of a token.

What does «resisted» mean?
The wording is similar in the first paragraph about spells cast against it, and here it says

If the foreign spell cannot penetrate a resistance equal to the level of the Aegis, it fizzles out.

I read this as every effect cast against the Aegis or anything inside has to penetrate the level of the aegis as if it is an MR (unless the item was inside the aegis at the time of the ritual or whatever else makes the item a member of the Aegis).

If the Aegis does not resist, the target also has a chance to resist on its own merit, but the two MR effects are not added together. One or the other has to suffice on its own to block the effect.

I've never considered that a device effect might not work inside a hostile Aegis. IMHO that was one of the strenghts of devices, compared to spells, as a trade-off of costing vis, having fixed Penetration and in generel being less flexible than a spell.
As I thought it, the Penetration of the device - even inside a hostile Aegis - was only relevant if used in targets with a MR of their own. And I actually thought that was a weakness of the Aegis, that it could so easily be circumvented by a device. But is has not been very relevant, since we don't play much magus on magus violence.
But I'd like to hear from Tellus about this

[loke]

Interesting thought, that Aegis might have no defence against items.

I am playing a rustic archer magus, embedding his spells in arrows as charged items to be shot at the target. Since, with craft magic, the arrows do not take a season to enchant, this is a very cheap and effective circumvention of the Aegis.

Not that we do much magus on magus violence either, but the idea is ... euh ... interesting.

[Tellus]

@Christian_Andersen/anyone else who might care to read through my ramblings:

The problem is exactly how an Aegis would protect against a device inside it?
Because as far as I can tell, the following is simply the rules:

@Christian_Andersen

I've never considered that a device effect might not work inside a hostile Aegis. IMHO that was one of the strenghts of devices, compared to spells, as a trade-off of costing vis, having fixed Penetration and in generel being less flexible than a spell.
As I thought it, the Penetration of the device - even inside a hostile Aegis - was only relevant if used in targets with a MR of their own. And I actually thought that was a weakness of the Aegis, that it could so easily be circumvented by a device. But is has not been very relevant, since we don't play much magus on magus violence.

...but then I got myself into a long near-Twilight, contemplating what it means when a device has a negative penetration. As written, the answer is nothing. It still works, as @Christian_Andersen covered above. But should it?
Is it significantly different from using eg a low/no penetration device in an area with eg a Divine Aura?

[Christian_Andersen (Christian Rosenkjaer Andersen)]

This is sort of turning into a new thread, about "How Aegis affects spells and devices"

So I'm making a new thread. I'l be back to post a link once I've done this

Edit: https://forum.atlas-games.com/t/how-aegis-of-the-hearth-works/167801