The bailiwick of the Lasombra, the Obtenebration Discipline grants its users power over darkness. The precise nature of the "darkness" invoked is a matter of debate among the Keepers. Some believe it to be shadows, while others, perhaps more correctly, believe the power grants a Kindred control over the stuff of her soul, allowing her to coax it tangibly forth.
In any event, the effects of Obtenebration are terrifying, as waves of enveloping blackness roil out from the vampire, washing over their targets like an infernal tide. Blatant uses of this power are obvious breaches of the Masquerade - of course, as Obtenebration is proprietary to the Sabbat, any Camarilla neonate or ancilla caught using the Discipline had better have an impeccable explanation.
Note: Lasombra vampires can see through the darkness they control, though other Lasombra cannot. Dreadful tales of rival Keepers struggling to blind and smother each other with the same wisps of darkness circulate among young members of the clan, though no elders have come forth to substantiate these claims.
This power grants the vampire a limited control over shadows and other ambient darkness. Though the vampire cannot truly "create" darkness, she can overlap and stretch existing shadows, creating patches of gloom. This power also allows Kindred to separate shadows from their casting bodies and even shape darkness into the shadows of things that are not truly there.
Once a Kindred takes control of darkness or shadow, it gains a mystical tangibility while under the vampire's manipulation. By varying accounts cold or hellishly hot and cloying, the darkness may be used to aggravate or even smother victims.Certain callous Lasombra claim to have choked mortals to death with their own shadows.
System: This power requires no roll, but a blood point must be spent to activate it. Shadow Play lasts for one scene and requires no active concentration. Kindred cloaking themselves in shadow gain an extra die in their Stealth dice pools and add one to the difficulties of ranged weapon attacks against them. Vampires who use the darkness to make themselves more terrifying add one die to Intimidation dice pools. Opponents plagued by flapping shadows and strangling darkness subtract one die from soak and Stamina dice pools. Mortals, ghouls and other air-breathers reduced to zero Stamina in this manner begin to asphyxiate; vampires lose all appropriate dice but are otherwise unaffected. Only one target or subject may be affected by this power at any given time, though some modicum of concealment is offered to a relatively motionless group.
The unnatural appearance of this power proves extremely disconcerting to mortals and animals (and, at the Storyteller's discretion, Kindred who have never seen it before). Whenever this power is invoked within a mortal's vicinity, that individual must make a Courage roll (difficulty 8) or suffer a one-die penalty to all dice pools for the remainder of the scene, due to fear of the monstrous shadows.
Shroud of Night
The vampire can create a cloud of inky blackness. The cloud completely obscures light and even sound to some extent. Those who have been trapped within it (and survived) describe the cloud as viscous and unnerving. This physical manifestation lends credence to the tales of those Lasombra who claim that the darkness is something other than mere shadow.
The tenebrous cloud may even move, if the creating Kindred so wishes, though willing this requires complete concentration.
The tarry mass actually extinguishes light sources it engulfs (with the exception of fire), and muffles sounds to the point of indistinguishability. Those within the cloud lose all sense of sight and feel as though they've been immersed in pitch. Sound also warps and distorts within the cloud. Even those possessed of Heightened Senses or Eyes of the Beast suffer +2 difficulty penalties for most actions. Additionally, being surrounded by the Shroud of Night reduces Stamina-based dice pools by two dice, as the murk smothers and agitates the victims (this effect is not cumulative with Shadow Play). More than one unfortunate mortal has "drowned" in darkness.
Mortals and animals surrounded by the Shroud of Night must make Courage rolls per Shadow Play, above, or panic and flee.
Arms of the Abyss
Refining his control over darkness, the Kindred can create prehensile tentacles that emerge from patches of dim lighting. These tentacles may grasp, restrain and constrict foes.
System: The player spends a blood point and do a challenge with a Storyteller. If the vampire chooses, she may spend a blood point either to increase a single tentacle's Strength or Dexterity by one or to extend its length by six feet. Each tentacle has four health levels (and is affected by fire and sunlight as a vampire) and soaks bashing and lethal damage using the vampire's Stamina + Fortitude. Aggravated damage may not be soaked.
All tentacles need not emanate from the same source - so long as there are multiple patches of suitable darkness, there are sources for the Arms of the Abyss. Controlling the tentacles does not require complete concentration; if the Kindred is not incapacitated or in torpor, she may control tentacles while carrying out other actions.