When the faction trait Binding is used with a custom faction, there is a problem with being able to use the spiders. The spiders will only be useable by a Wraith faction.
The reason is the spiders have this
<IsStartingUnitType>1</IsStartingUnitType>
and they are of course found in the wraith racetype:
<StartingUnitType>Unit_BoundHarridan</StartingUnitType>
<StartingUnitType>Unit_BoundHoarder</StartingUnitType>
<StartingUnitType>Unit_BoundWidow</StartingUnitType>
Solution: Simply remove the <IsStartingUnitType>1</IsStartingUnitType> from the spider units and the wraith racetype. The spiders will still only be available to factions with the Binding trait.
In addition, the Black Quire tech required to unlock the last spider unit has this
<Prereq>
<Type>Allegiance</Type>
<Attribute>Empire</Attribute>
</Prereq>
so it is not possible to get it for kingdoms. Perhaps move the unit to a shared tech?
