Path Killer

The ability to '''Irreversibly remove one of the many possible pathways/methods to do something. '''Subpower of the combination of Universal Irreversibility, Mathematics Manipulation,Virtual Warping and Nonexistence. Inspired from reading the Last Word entry in One Hit Kill.

Capabilities
For a given task which has many ways to accomplish. Users can remove one of these ways so that there will be less ways available to accomplish said task.

For example, in Planescape, Orcas have at least two ways to kill others: Either via the traditional method, or via using the Last Word. However, later in the sotry some form of Plot control occurs as the many gods united and somehow weaken the power of the Last Word. Now Orcas only have one way to kill others: via the traditional method.

The effect of this power is often the result of some almost story breaking Plot control (by rendering an all powerful and irreversible entity useless, usually to create a plot twist), but skilled writers can script their characters to use it as a standalone power with varying strength and domain.

Administration
Various, including
 * As a spell
 * Hand gestures
 * Incantations
 * Powerful objects
 * etc.etc.etc.

Applications

 * Nonexistence: When the task is "the existence of the object" and all possible ways and perspectives for this task is removed
 * Some forms of Curse Inducement: when the task is e.g. "Healthy" and the pathways to the task are eliminated one by one
 * Probability Manipulation: when the task has a significant involvement of probability e.g. "probability to extinguish this fire", so that the task become more likely or unlikely (depend on which paths you remove). Repeated applications can acheive Certainty or Impossibility.
 * Physics Manipulation: e.g. Stop the progression to heat death by removing the two main pathways to increase entropy (2nd Law of thermodynamics): tendency to increase no. of possibilities (microstates) and energy dissipation (heat).
 * Immortality by removing all paths that lead to one's death, or Death Inducement by removing all paths that lead to one's life.

Limitations

 * One path at a time! (i.e. Usually have massive cool down period), thus it takes a long subjective time (thus immune to cheating such as Time Manipulation or Probability Manipulation to speed up the process) to achieve reality warping feats
 * Can unintentionally render a curse unbreakable except via omnipowers if the condition(s) to break the curse is removed. (Curses are notorious for their strict breaking conditions, like a stubborn person who won't listen to you unless you have exactly what they need)
 * Cannot undo what is being done (destroyed paths remains destroyed unless reversed by omni powers)
 * Cannot affect entities that are under the effect of omnipowers

Indirect examples

 * The gods that weaken the Last Word (Planescape)