Add GHOST GANG! (#13734)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Server/Revenant/EntitySystems/RevenantSystem.cs

@@ -136,6 +136,7 @@ public sealed partial class RevenantSystem : EntitySystem
 
         if (component.Essence <= 0)
         {
+            Spawn(component.SpawnOnDeathPrototype, Transform(uid).Coordinates);
             QueueDel(uid);
         }
         return true;