Hairfoot said:
Hooray! The number one question asked on D&D forums the world over: how does HiPS work?
Not even "why do assassins have to be evil?" comes close to the amount of flame and acrimony this one can produce. Strap yourself in, Shilsen!
And yet, other than this dire proclimation, there is no actual deluge. Only been half a day or so, I suppose.
So, I'll post my take, having run a game with a 3.0 Shadowdancer and since looked at the rules since, but not debated them to death.
Hiding is not a free action. It is a consequence of movement, and can also be done without moving as a move action. A shadowdancer can hide whenever they move to cover or within 10' of a shadow, or whenever they spend a move action to hide while in cover or within 10' of a shadow. (Note that it appears shadowdancers can hide while being observed at all times, regardless of illumination)
A shadowdancer who attacks reveals his hiding location. With a move action, he can rehide. Here's where it gets sticky. I believe we played that this rehide was at a -10 penalty, as a compromise between the -20 for sniping and the -0 because no penalty for using HiPS is specified.
The nasty thing for us was "What is a shadow? How big does it have to be?" Basically, no matter how liberally you play it, if you EVER say that there is no suitable shadow within 10', the player with have a counterargument. I know some people play it as "A 5' square with shadowy illumination" but that strikes me as a terrible idea, since low-light vision means that shadowy illumination is in different squares for different people.
But, I haven't seen this supposedly epic debate, so maybe I just said all of the standard silly things that people will pick apart with tweezers. But, that's half the fun (magic missile targets mirror images, too!)
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gnfnrf
EDIT: timeframe