Requires Training: Yes.
Spellcraft is used to identify spells being cast by other spellcasters.
Check: A successful check means that the character has identified a spell being cast by an opponent. The DC of this check is equal to 15 + spell level. The character also gains a +1 bonus for every 5 ranks in this skill to all saving throws against spells.
Special: A specialist wizard gets a +2 bonus when dealing with a spell from his specialized school.
Use: Spellcraft checks are automatic whenever a spell is cast nearby.