Everything

Mind 3, when connected to a ward, can stab the offend-ing party with an invisible knife of psychic pain. If and when the trespasser crosses into the area of the ward, she suffers an immediate bashing-damage attack, as described under Psychic Blast in the Uncanny Influence section. The caster’s Arete provides the dice pool for this attack, and 6 – or the target’s Willpower, whichever is highest – is the difficulty.

Technically, this sort of thing is a vulgar-magick attack, so the difficulty should be a minimum of 7 if the target doesn’t count as a witness, and 8 if she does. This attack, however, is set into the ward and thus remains invisible when it goes off. No one can tell that there’s a mage casting the attack, so the target’s Willpower provides the difficulty for this attack. As mentioned under Wards and Paradox, above, this doesn’t earn more Paradox for the mage. That said, the target will probably wonder why she’s suddenly got a massive headache…

An especially ugly ward could add Life 3/ Mind 3 to the ward, dishing out an aggravated-damage Psychic Shatter. Again, this attack gets detailed under the entry of that name in the Uncanny Influence section… and if someone’s brains suddenly start leaking out his ears, people are certainly gonna wonder what’s what.