Magicians Maunual part 2
Psychic attack and defence

Psychic attack is perhaps more common among non-wiccans, as most wise ones keep in mind the Rule of Three, and trust in the Goddess to avenge a wrong.  But often we are called to defend ourselfves from an assailant, be it human, demon, or whatever evil entity we believe in.  There are several ways to attack and defend, and should be performed properly if they are to be effective.  
I will explain phychic attack first, so the magician will understand how the magick works to defend himself better against them.    
Draining is the easiest way to attack, but can be a double edged sword, as I will explain later.  To drain an entity, you must visualize that entities aure being drawn away from it, and enetering your body.  If the victim is showing an obvoius emotion such as anger, you will begin to feel that emotion if successful.  Draw in the energy through your left hand, and store it in your right.
Draining can severly harm an individual, causing them to feel physically weak, suicidal, disoriented, and light headed.  If done for an exteded period of time, i can kill.   Draining often becomes an addiction, making the magician dependent on other people's life force to feel strong, and a long time user of this talent will become ill without a victim to drain.
    Darts are a more difficult art to master, requiring intense visualization, and the magickal force to pierce an entities aura, which gives one a minimal measure of defense.  To form a dart, channel energy into the right hand, forming a sphere.  While continuing to channel energy into the shpere, form it into a dart shape.  Throw it at the intended target.  The dart will psychically damage the victim by piercing the aura and admitting negative energy.
    Another variation of the psychic dart is to charge it with a rune.  The rune can be Is, Thorn, Sigel, or Tyr, which all are ideal runes for attack.  visualize the rune and it's magickal properties in the rune.  The rune MUST ve properly visualized on the dart.  Is can freeze an attacker, Thorn will cause pain, sigel will attempt to kill, and Tyr will generally cause their magickal and physical attacks to fail.
    Mental assault is indeed a black art to master, as one will be attempting to metally flay someones psyche, and should only de done in defence of life itself.  Mental assaults can cause depression, insanity, suicidal impulses, and total unconsciosness in done powerfully.   the best method to go about mantally attacking someone is to recall an emotion in your own mind, be it anger, depression, hopelessness, pain, or a suicidal emotion.
A rune can also be used against a recipient, visualized carved into the brain, with its properties charged  into it.  You must then astrally enter that persons mind, and experience a negative emotion powerfully, letting it radiate through you.  Mentally lash out  at the entities psyche.  This will severly damage a mind if done properly.
    When dealing with psychic attack, remember the Wiccan Rule of Three...

Defense:
   To defend against draining, you can use the "Shield of Faith", as explained in Donald Tyson's book The New Magus.  Visualize a yellow disk extending from the left hand, blocking all forms of energy and vibration.  The Eolh ruve can be used also with the Shield, the magician visualizing it etched into the bright surface of the shield.  For greater effect, visuaslize the shield as being reflective, to return negative energy.  The Armor of Tranquility can also be used to great effect, projecting a blue crystalline barrier about an inch from his body.  See it as a prismatic barrier, making all attacks shatter and be rendered useless.
The same above methods can also be used against darts, but mental assault may call for a different approach.  The magician can visualize the attacker drawn father into his mind, where the magician can effectively trap and isolate the attack.   Visualize your brain as a labyrinth, luring the attacker into mure and more confusing passages, each more hostile than the last.  Then, visualize youself in the labyrinth facing him, and use any one of the three attacks I have listed above.  Remember, with proper control, you can make someone assaulting your mind a true Hell.  You may even wish to call upon memories of power and success to make the attacker lose his confidence on his ability to defeat you.

A final word to the wise:

All magick is in it's nature neutral in the areas of good or evil.  The true evil or good is in the heart of the Magician.  If you feel you can escape Karma and use the psychic attacks with impuntiy, dont bother.  Each attack has it's penalties, be it addiction, or karma itself.  These abilities are to be used in the defence of life, and should never be abused.
                                                             - Tarynatha