What I'm trying to do is give NPCs around me a Spell (plague).
I've got a script that works but i need a little help refining it to work more fluidly and possibly more efficiently.

Scriptname plagueTestScript extends QuestSpell property plagueSpell autoEvent OnInit()Debug.MessageBox("You've got the plague.")RegisterForSingleUpdateGameTime(0.03)endEventEvent OnUpdateGameTime()Actor randomActor = Game.FindRandomActorFromRef(Game.GetPlayer(), 500)while (randomActor.HasSpell(plagueSpell))randomActor = Game.FindRandomActorFromRef(Game.GetPlayer(), 500)endWhilerandomActor.AddSpell(plagueSpell , false)Debug.Notification("A new actor has the plague")RegisterForSingleUpdateGameTime(0.03)endEvent

Problems with this script so far:

• Walking into a group of people causes 1 person to get the plague and then there is a wait for the next UpdateGameTime before someone else can get it. (I have consider just putting in 10 FindRandomActorFromRef lines with 10 proceeding while loops, thoughts?)
  
• For system efficiency reasons, I want to avoid such a fast RegisterForSingleUpdateGameTime.
  
• Game.FindRandomActorFromRef(Game.GetPlayer(), 500) sometimes returns the player, an obviously inefficient roll of the dice.

For demonstration im referring to this script as a plague because conceptually it makes sense. But in reality it's for NPCs in my Get http://skyrim.nexusmods.com/mods/19660, a feature a lot of people are requesting. --- That said, i'll probably release a plague mod separately, maybe to do with Peryite - The Daedric Prince of Pestilence

http://www.creationkit.com/Dynamically_Attaching_Scripts is the best way to attach abilitys/scripts to many actors. No need of a quest.

That seems awesome, thanks for the link! Now if only I could find time to implement it.