Chauzu said:
I have some questions for you Planescapers:
Is the Lady an all-knowing sort-of being, or can she be fooled?
Does the Lady control the portals inside the Portal Towns also, or just the portals in Sigil?
If she can only control the portals in Sigil, why can't the fiends coming through a portal in Plague-Mort, Torch, or Ribcage just fly up to Sigil? Is Sigil only enterable through portals, even if you are coming from the rest of the Outlands?
What other powers does the Lady have?
The Lady is generally considered to be all powerful within Sigil, though there have been a very slim few instances where her ability to sense a small area in the city was blocked by an artifact (of unknown origin and purpose, however She allowed the building it rested in to exist, perhaps on purpose. This one instance of a perceived weakness by The Lady is anamolous. (the module 'Harbinger House')
It is known that The Lady's scope of vision seems to defy the normal mortal and immortal sense of linear time. (see 'Faction War')
The Lady has ultimate and final control over the portals of Sigil. Aka any portal that goes out of Sigil or leads into Sigil is over the control of The Lady ultimately, regardless of where this portal is or who is attempting to open it.
The only way to enter Sigil is by way of the portals. The infinite spire in the Outlands is infinite and cannot be scaled to reach Sigil. Sigil does overlap the Astral but you cannot enter Sigil nor leave Sigil by way of the Astral, it is blocked off from the rest of the Astral plane by a barrier that cannot be traversed by objects or spells.
The Lady can maze an individual, and need not be present physically to invoke this power. A person simply turns a corner and finds themselves in a new room or street that loops back onto itself, devoid of any persons besides themselves. The mazes exist as portions of Sigil spun off into the Deep Ethereal as demiplanes unto themselves. You can find and enter these from the outside, however once inside the only way to escape is by way of a single hidden portal that is perhaps more to taunt the condemned than to offer hope of escape.
Also, when in the mazes you do not age, and food appears for you twice per day. Dying inside the mazes is unknown as to what would happen to your soul, though since suicide might be considered an easy way out it may be impossible to kill yourself, or you may arise spontaneously after each attempt. This is an unknown.
The Lady also has the power to flay an individual, Her shadow simply appears and wherever it touches its victim they erupt into a storm of bloody cuts, gouges and slashes. They quite literally explode in a mess of blood and gore. There is no way to escape this punishment, dodge it or resist it. This applies to mortals, immortals, and even true deities. Aoskar the greater god of portals, planewalking and opportunity was obliterated by The Lady along with his temple in Sigil, his priests, and his worshippers (in Sigil and outside it as well). The only survivor known was Fell the fallen Dabus, Aoskar's proxy who forsaked The Lady and survives now perhaps as mercy or punishment for his sins.
The Lady's ability to maze is perhaps capable of reaching outside Sigil as well, though this is suspected but not proven. Factol Skall of the Dustmen may have been in the Dustmen faction headquarters in the Negative Energy plane at the time that he was mazed, rather than being in Sigil. If so this extends The Lady's reach considerably.
That said, The Lady is a passive defender of Sigil and doesn't always react in public and immediately to any threat. For instance the Blood War once spilled over into the Hive ward of Sigil for a week or more and She did nothing till finally ejecting the fiend's en masse on day. The Lady does not answer every minor threat to Sigil's residents lest they treat her authority and protection as expected and routine. She cares for the city of Sigil itself, not necessarily its citizens...
For a bit more on this either look at the older Planescape books, or a nice summary (if I do say so myself) in the 3e Sigil guide at
www.planewalker.com , since it covers The Lady, the portals, mazes, etc.
The Lady may have other powers as well, she's an unknown in many ways. (See 'Faction War' for instances of The Lady hurling an NPC back in time, erasing his memories selectively, bottling his soul in an impenetreble gem for his own 'future' self to use to kill 'himself', and hurling the gem into the depths of Carceri. Death by created time loop essentially)