Bespell Weapon 
Feat 4
Source Pathfinder Advanced Player's Guide
Frequency once per turn
Requirements Your most recent action was to cast a non-cantrip spell.
You siphon the residual energy from the last spell you cast into one weapon you're wielding. Until the end of your turn, the weapon deals an extra 1d6 damage of a type depending on the school of the spell you just cast.
- Abjuration force damage,
- Conjuration or Transmutation the same type as the weapon,
- Divination, Enchantment, or Illusion mental damage,
- Evocation a type the spell dealt, or force damage if the spell didn't deal damage,
- Necromancy negative damage
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
OracleThis indicates abilities from the oracle class.
SorcererThis indicates abilities from the sorcerer class.
WizardThis indicates abilities from the wizard class.