What determines whose Global spell sticks?

[Master Shake]

Was playing Online with a friend, and we both cast Gift of Health on the same turn.

Me: Nature Magic 5, 41 Gems used
Him Nature Magic 5, 51 Gems used

Despite using fewer gems, MY Gift of Health stuck, his never took affect. Does anyone know what determines which spell stays?

[Pocus]

chance & probabilities ...

[ceremony]

What are these probabilities specifically?

[SurvivalistMerc]

My understanding is that all casters cast their spells in random order.

I think that what mattered was who was randomly selected to cast their GoH first. Once a global spell is active, it must be dispelled before anyone else can have that spell under current rules.

He tried to cast GoH without dispelling your existing GoH. Automatic failure.

[Arryn]

Originally posted by SurvivalistMerc:
He tried to cast GoH without dispelling your existing GoH. Automatic failure.

Are you absolutely sure that casting the same enchantment as an already-active one is an auto-failure? Reason I ask is because I have seen the AI replace GoH's of mine with its own without doing a Dispel first ...

[ February 23, 2004, 19:32: Message edited by: Arryn ]

[NTJedi]

Arryn is correct... casting a global spell can take-out another global spell.

I've seen cases where Burden of Time has killed another global spell yet Arcane Nexus(150gems) could not.

Unfortunately only the developers can provide us the details as for how this works.

[ceremony]

You can dispel a global enchantment with another global enchantment. I had always thought this was based on gem input into the spell.

However, in the case Master Shake cited, I cast my Gift of Health first, and got the message that I had successfully cast it. Two Messages down the list was another "dire portent" informing me that another Gift of Health had overwhelmed mine.

The question is: what determines this dispel chance? My spell had 51 gems and was cast first, and his only had 41 and was cast afterward. Both were cast by mages with the same Nature skill.

Apparently, there is no requirement to use more gems than the spell you are dispelling. Is there always a small base probability that a global enchantment will dispel another, and using more gems simply increases this chance? If so, what is this base chance and what is the per-gem improvement to it? If not, what is this mechanism based on?

EDIT: I should make it clear that while I say my spell was cast "first," I am only inferring this from the fact that my spel report was listed first in the message list. Both were cast on the same turn. So I guess another question I have is whether this would have occurred differently had his spell been cast on the next turn rather than the same turn - are globals treated differently for dispel purposes when cast on the same turn rather than different turns?

[ February 23, 2004, 20:13: Message edited by: ceremony ]

[Master Shake]

ceremony is correct that his was cast first, and mine cancelled his. What surprised me was that I did this using fewer gems.

[Kristoffer O]

There is an openended six side die added to the gem input of every global and dispelling attempt.

[Kristoffer O]

No difference if cast during different or same turns.