Dark Eldar

Builder
The Slave only needs to start the construction of a building. Upon doing so, the building constructs itself. This means that:
 * Dark Eldar do not need to buy more than one builder in the opening, which saves them resources.
 * Dark Eldar cannot speed up the construction of buildings.
 * The Slave Builder is at a reduced risk of death as it does not need to be near the building once construction has started.

Starting Souls
Dark Eldar start with 40 souls.

Generating Souls
Souls are generated in two ways:
 * Dropped from the corpses of dead allies and enemies.
 * Dark Eldar build Slave Pits (70/10/20), which can be upgraded into graveyards (40/0/15) that produces souls that need to be harvested.

Harvesting Souls
Three units can harvest souls:
 * Slaves (A vulnerable builder unit)
 * Mandrakes (A light infantry close combat unit)
 * Talos (A medium armoured and relatively fast close combat vehicle)

Table of soul harvest rates
Pop is represented as Squad Cap/Support Cap

Cost / Model does not reflect the minimum squad size. Mandrake minimum squad size is 3, which makes the initial buy cost 90/0. Mandrakes harvest at a rate of 0.5 per second. As multiple Mandrakes in a squad can harvest, this effectively means that its 0.5*number of mandrakes. The max squad size of Mandrakes is 6. This means that potentially it is 3 per second. The main limitation on this is pathing, as it imposes a limit on how many mandrakes can harvest a given corpse.

Infantry

 * Some units cost no souls, which allow you to adapt while low on souls.


 * Some units cost more souls. This creates a trade-off between using Soul Powers and using Soul costed units.

Vehicles
By the Dark Eldar are Tier 2 and have the Dark Foundry (Vehicle Structure), they would have a Support Population of 4 given that they have no other sources of Support Population (such as a 2nd HQ).