Advice on the 13 practices

1 Dot
Practice of Compelling - The Practice of Compelling is used when you wish to make something within the purview of the Arcana do what it’s supposed to do. It generally cannot do damage or create penalties/bonus, only cause the target to do what it’s already capable of doing.

Examples: Traffic Lights changing, TV changing stations, Spirit helping/hindering within its influence, speeding up pulse rate

Practice of Knowing – The Practice of Knowing gives direct knowledge of something based on the Arcana’s purview. This isn’t involving sensing something, you just know. It also tends to be mundane information, esoteric information being more the domain of Unveiling.

Examples: Knowing what time it is, determining the composition of a wall, diagnosing an illness, knowing what to mix to make the color chartreuse

Practice of Unveiling – Contrast to Knowing the Practice of Unveiling enhances ones ability to sense the purview of the Arcana and is more likely to reveal the esoteric secrets that resonance and Mage Sight can reveal.

Examples: Sense any conscious minds around you, locate a ghost in an old mansion, tell if a spirit possesses a person, locate the remnants of a Space created Portal

2 Dots
Practice of Ruling – The Practice of Ruling allows for a bit more control of the Arcana’s purview. With this level you can push the target to do something that it wouldn’t normally be capable of on it’s own. The ability to do minor harm and improve the capabilities of the purview begin here.

Examples: Make the heat from a heat hotter, making a car’s transmission shift gears easier, change a key to fit a lock, make a boring commute go faster

Practice of Shielding – Shielding is the most obvious and consistent of the Practices. It is used to protect yourself (or others at advanced practices) from the effects under the purview of the Arcana. This is mostly used for the infamous Mage Armor but other effects can fall under this practice.

Examples: Protecting yourself from fire, shielding yourself from a mind probe, Making it impossible to look into your past

Practice of Veiling – The Practice of Veiling does exactly what it says it does, it veils. It allows you to hide elements that fall under an Arcanum’s purview from being sensed or detected by any means.

Examples: obscure the background noise while talking on the phone, making a wound looke ‘not that bad’, hide the resonance of a Spirit that is in the Twilight, keep someone from detecting the secret door behind you

3 Dots
Practice of Fraying – The Practice of Fraying is the beginning of the damaging practices. It covers degrading elements and capabilities and can even cause a direct damage attack.

Examples: eroding the metal joints of a door frame, weakening a ward around a sanctum, weakening the gauntlet, short circuiting a computer

Practice of Perfecting – The Practice of Perfecting does exactly what it says: it perfects something. While Ruling allowed you to slightly improve the Arcana’s purview, Perfecting allows you to greatly improve it as well as repair it well beyond an sort of natural ability to do either (a limit imposed on Ruling magics).

Examples: make a car run indefinitely with no need for repair, improve the sharpness of a blade to near mono-molecular level, strengthen a friendly spirit, make a situation just seem to go right

Practice of Weaving – The Practice of Weaving is a bit odd, it’s job is to allow the mage to alter the capabilities of something within the Arcana’s purview without altering past the Arcana’s purview. It allows you to take on properties to targets that the target would not normally be capable of.

Examples: Make fire fuel off of carbon dioxide, let a saltwater fish survive on air, allow oil and water to mix, change steel to be a pliable as rubber

4 Dots
Practice of Patterning - Patterning is one of the more vague practices though in many ways it mimics Weaving. The Practice of Patterning allows you to change phenomenon within an Arcana’s purview between roughly related types. This allows for a wide versatility of effects.

Examples: Make fire resonate cold, allow alcohol to run a car’s gas tank, make a spirit material,

Practice of Unraveling – The Practice of Unraveling is much more than just advanced Fraying. Where Fraying is a blunt object, Unraveling is a scapel that allows the mage to remove and take away the things he feels need not be there allowing for a more subtle change to things.

Examples: removing the mention of an event from a book’s text, creating a bubble of timelessness, removing the antibodies from a vial of blood, cutting away events from the coming future

5 Dots
Practice of Making – The Practice of Making is rather forward and obvious. It allows you to create anything within the purview of the Arcanum.

Examples: Do I really need to?

Practice of Unmaking – In my games this will be referred to as the Practice of Annihilation just to create a more unique name. It covers exactly what it says, it annihilates and unmakes things reducing them to non-existance.

Examples: Like making only reversed.
This text is blatantly stolen from Deimos_Masque over on the White Wolf forums. I found it useful and will use it in my upcoming campain as well!

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General Considerations
Any time you cause damage to something you do so at the progression of Bashing, Lethal and Aggravated. The Practice of Fraying is usually required to do damage to any sort of living thing (or unloving thing in case of Vampires) though inanimate objects can be effected as early as the 2nd dot.

When effecting targets that are not you the progression is Yourself/Touch, Single Person/Line of Sight and Group.

Some exceptions are giving to the practices in the core rulebook, but those exceptions seem to be more for clarification than an attempt to realign the practices. Those exceptions will be handled as they come up in game.