Persistent info on actors question (Papyrus)

[kevlar69]

What is the best way to store some info on an an arbitrary actor?  Say a counter of times attacked, and an array of the last 10 attackers?  (Not the best example, but a clean one)

 

A magicEffect that is permanent, and has some stored properties?

 

A hidden inventory token that can be placed in actor inventory?

 

Or is there something simpler? 

 

EDIT: A magicEffect applied on an actor can do it, and has the added benefit of accepting events that affect the 'actor' object, such as onHit().  I have not determined if the magicEffect can be 'lost' due to dispel of effects, or location changes.  Guess I need to wait 30 days?