The Heroes Round Table

Ok, so it IS a randomized event.

We may not know what the factors are for sure, but we know that it's not pre-determined.

Thanks.

What are the parameters that affect neutral stacks joining your party when you encounter them on the map?

Is there a percentile chance that it will occur, or is this pre-determined by the map maker?

Will they offer to join only if you have an open slot?

Thanks in advance for any help with this.