Elemental King/Queen summoning limits?

[Cainehill]

Chazar said:

So I am okay that uniques are greyed out. One has heard a rumour that this thing was created by a genious and is so struck with awe that one cannot recreate it...

But that explanation aside: I would propose a general percentage chance for the success of Unique Items Creation as well as Unique Summons, so that a unique item cannot be created instantly. But in that case, a good percentage of the gems cost should be returned and not wasted...

General percentage chance? 100%, unless the item has already exists, in which case it's greyed out and not available for creation. Unique summons - 100%, unless already summoned, in which case 0%.

And of course, if someone is forging the same unique item / summoning the same Last unique summons in the same turn, it's a crap shoot. In theory, if two of you are doing it, 50% chance. If 3, 33%.