(Passive) INT
  Possessed By: Some Humans, Grey Elves, Black Orcs, Druids, Mages, Priests, Alienists, Loremasters.
  Effects:  Spellcraft can be used in the following ways:
   * Identify Spells (Passive): When you witness another spellcaster cast a spell, the game will automatically make a Spellcraft check to see if you can identify the spell. The DC of this check is 10 + the spell's level.
   * Counterspell (Passive): If you beat the above check to identify a spell by a high enough margin, you may also be able to quickly issue a counterspell in response, completely negating the enemy's spell. If you know a spell from the same school of magic of equal or higher level than the one you are trying to counter, the DC to counterspell is 15 + spell level. If you do not know such a spell, but you do know dispel magic, you are still capable of issuing a counterspell provided that your Spellcraft check exceeds DC 20 + spell level.
   A counterspell costs you the higher of the mana cost of the spell countered or the spell used to counter, unless your Spellcraft exceeds +15, +20 or +25, in which case it costs you 2/3rds, 1/2 or 1/3rd of the casting mana cost. It also costs you [20 - Spellcraft Rating] segments to utter the words (minimum 5), and you must not be magically silenced. Using dispel magic to counterspell takes longer, requiring [30 - Spellcraft Rating] segments instead. There is a Tactical Option which allows you to decide to counterspell always, never, intelligently or to ask the player manually each time the opportunity arises.
   Regardless of your Spellcraft score, you cannot counterspell the reading of scrolls, use of wands or other magical items or the invocation of innate abilities unless you have the Broad Counterspell feat; the Reflective Counterspell feat also augments counterspells.
   * Discern Standing Magic (Passive, Unimplemented): If you have a Spellcraft score of 11+, you will be able to discern spells that enemy casters or creatures have active on them, provided your Spellcraft equals or exceeds [10 + Spell Level]. If this is the case, this information will automatically be listed after a character's equipment when you examine that character.