Hypersmurf
Moderatarrrrh...
I don't think you can divide up marking, and the effects of marking in a particular instance, and treat them like separate things.
But "The Fighter can hit me if I shift" isn't an effect of the mark. It's an ability the Fighter has that relates to a marked opponent.
In the same way that someone with the Wintertouched feat gains combat advantage against a creature with cold vulnerability... that's an ability they have, not an effect of a power that bestows cold vulnerability.
Next to the orcs is a many tentacled beast who's tentacles reach and writhe thirty feet out from his body. Is there any way, under the rules as written, to know that this monster has threatening reach?
Perhaps not. So be cautious once you get to within those thirty feet!
If the answer is no, what does that tell us about this debate?
I'm not sure... what do you think it tells us?
If I inflict 11 points of ongoing radiant damage on your character by using a paragon path ability that isn't a power, does your character know about it during my turn? Does he not figure it out until his turn starts and he takes damage?
Doesn't seem unreasonable. As a DM, I'd be inclined to let the character know that the Radiant Servant pointed at him, and he's started glowing with an unpleasant brightness...
... and then at the start of his turn, the light flares and he takes his 11 damage.
Does any page exist in the entirety of the game that explicitly states that a character has any idea of how wounded he is, other than "bloodied" and "dead?"
I haven't found a page in the entirety of the game that explicitly states "You know how wounded you are". On the other hand, the example on p294 uses hit point totals, not just the labels, in every instance where people are making decisions about using healing abilities.
-Hyp.