Goumindong said:Depends on the power. If the power is an ability used on the monster that makes the monster grant CA then yes, it knows. Why does it know? It knows because in the powers text it says "the monster grants CA" and the monsters know the effects of all powers used on it.
If the power was not used on a monster and simply says "you have combat advantage on the next attack you make" then the monster does not know, because you did not use any power on them and it is not within the basic combat knowledge of the game.
See, here is the problem with this type of interpretation.
If there are special exceptions (or specialized rules if you prefer) like this, but they are not crystal clear:
1) Each DM will play it differently since some DMs will be rules lawyers, some will read the boards, and some will be clueless.
2) Powers like No Opening can sometimes be used and sometimes not be used.
This is really bad game design. There is no real good balance reason for segregating this.
Instead, it should be a simple rule so that all DMs play it the same and no DM has to pull out a magnifying glass to analyze the exact text to the nth degree of a power.
DM: "Is that CA given to the PC or does the monster give it?"
Player: "Well, let me bring out the book."
The entire point of 4E was to get away from this type of special case nonsense.
This is separate from the Divine Challenge and Aegis marks because those marks make special allowance for the specific mark created by the power. The ability that they grant is tied ONLY to the mark created by the power and is not a separate ability by itself. If they get a mark assigned to them by any other means, that mark does not grant the special mark abilities.
You keep bringing this up as if this makes a difference in core rules.
Where exactly is the rule that states that an ability that affects any mark for a PC is not known by the foes and a power that affects only the mark created by this PC's power is known?
Answer: There is no such rule. This is merely symantics that you are using to try to justify your POV.
This argument of yours comes back to the same thing. If the Combat Challenge ability is special in this way, so is it's mark. If the special portion of CC is not known by the monster, then neither is the mark created by CC.
You cannot have your cake and eat it too.
There is no rule line drawn between the two. CC modifies the mark for any power the same way, regardless of the source of the mark.
Now, I will agree that some designer went and changed this in the Compendium so that there is a Combat Challenge ability and a separate Combat Challenge power. Unfortunately, they did not do that in errata (in fact, they errataed CC and did not put this in) or the core book. The did not even do it in Character Builder. So yes, I'll concede that some designer over at WotC probably agrees with your POV here.
But in core, there is no significant conceptual difference between Combat Challenge and Aegis of Assault.
Both have the foe trigger an attack. Having the foe know about it in one case and not know about it in another case is non-consistent and illogical.
Forcing the DM to figure this difference out for every single case is bad game design.
Not all DMs frequent the rules forums.
Now, there is nothing wrong with the solution that was put into the Compendium. If they want the Fighter to get in an extra attack now and then for balance or something, that's ok. As long as WotC makes it crystal clear that this is an exception to the standard rule about monster knowledge.
But in the core rules, there is no definitive RAI or RAW interpretation. So, it makes sense in core rules to use the one that makes the Fighter sticky and is consistent with similar rules like Divine Challenge.