Colonial Remains

… was once an important colony of the …, and some remnants of its infrastructure remain usable as a base to re-colonize the planet.

The command below will trigger the "Colonial Remains" event in Stellaris:

When this event fires, you can choose between the following option:

• Excellent.
  • Gain modifier: Colonial Remains
  • Add deposit: Ruined Arcology

Conditions the game checks before this event can fire:

• Requires origin: Remnants
• Must not have modifier: Colonial Remains

owner = {
  has_origin = origin_remnants
}
has_planet_flag = prescripted_ideal
NOT = { has_modifier = colonial_remains }
closest_system = {
  limit = {
    any_system_colony = {
      exists = owner
      owner = {
        is_same_value = root.owner
      }
      is_homeworld = yes
    }
  }
  max_steps = 6
}