[Need Info] Spawn behavior spawner & spawn tracking?

[Tleno]

Is there any reliable data-based way for unit with spawn behavior to track all of it's spawns and for spawn to "remember" and recognize the spawner?

Examples of application:
>When "idle", spawns follow the spawner everywhere.
>When spawner or spawn are selected, an indicator appears over other spawns belonging to the same spawner
>Spawner has an aura that effects only it's own spawn and not any other spawner's spawn
>When spawner has no spawns alive, he receives a specific buff behavior
>Spawner can issue specific orders to spawn trough it's own abilities, and upon completing them the spawns return back to their spawner.