Got of couple other observations/speculations to throw in.
First off, there are some mobs in MM with the capability to cast See Invis.
Which mobs those are I have no idea.
Case in point: The first time I ever saw a will sapper I had the invis song
up. I conned it and it was ready to attack. Before I could back off, it
cast a spell that dropped my stamina bar to zero. It killed me fairly
quickly after that. Wary of will sappers after that incident, I later saw
one (while Invis song was up) standing behind the crypt in the GY (near the
secret wall to the jail). My group was camping the GY so when I saw the
will sapper it had just recently spawned. This time it conned indifferent.
I walked right up to it and it didn't attack me. I pulled it back to the
group so don't know if it would have started buffing itself had I not pulled
it. Based on those two incidents, I assume that will sappers do not
inherently see thru invis. They either cast it on themself or get it from
another mob.
Second off, I have been told that at night in MM undead mobs will spawn
inside the castle. Once again I'm not certain what the names of these mobs
are. These undead mobs will see thru invis
Third, if any of the mobs that can cast See Invis are pulled to the zone via
a train, on their way back to their spawn point they will likely buff any
familiars along the path from the zone to the graveyard. That explains how
the familiars could see thru your song.
Galtin of E'ci
> A possible theory I've heard so far (also mentioned by someone here) is
> that
> there are mobs that cast see invoice on others. I wouldn't even be
> surprised with the pathing bugs if they are casting from a distance.
>
> As far as the mobs around the lake - I think they are different. I ran
> past
> them and didn't get attacked - but the ones in the passageway to the
> graveyard - and the cave always seem to. As far as the castle mobs - when
> I
> was lower and hunted by the lake - I rarely if ever was attacked by
> them -unless someone attacked one of them...
>
> While the cast see invoice theory may be the answer - I've been attacked
> so
> many times trying to get to and from the graveyard/cave area - I believe
> that Verant added See Invoice to some of those mobs...
>