I want to create some spells that specifically work on activators of different types. I really want to be able to do drain effects and other effects that don't normally show up properly on activators. I like that shock shows up for some time, but a lot of the others do not. I really want to absorb from/to activators like the player or NPC is gaining/losing some power from/to them. Is this just a matter of playing with OBSE effects or is there more involved? Can I hit marker rats if they are invisible?