global enchantments when there are 5 already?

[Vicious Love]

Fate said:
But that means your new global will attempt for the empty slot, not one YOU already have claimed, giving you a chance for another global.

So you're certain it doesn't mean the first nation in the resolution sequence gets the slot, and all the nations thereafter are treated exactly as though they'd cast a spell with 5 globals already up?

Hm. If multiple nations do compete for the same slot, what do you suppose happens if one nation casts both an overpowered (a good hundred gems above base cost) global and a weak one? Is there a chance of the weak one being used in the bid for the slot, failing, and the powerful one being cast normally (that is, competing with a random global) after some other nation gets the slot? This would all be pretty tiresome to test, I'm just wondering if anyone has some inkling of what the exact sequence is.