Toughening Transmutation

 
Prerequisite(s): Spell focus (Transmutation) or Transmuter level 1+.
 
Benefit: Whenever you cast a transmutation spell, you can choose to grant yourself or any one creature targeted by the spell damage reduction 5/magic. If the creature already has damage reduction (of any type) from another source, you increase that damage reduction by 5 instead. This effect lasts for 1 round.
 
Special: A transmuter can select this feat as a wizard bonus feat.
 
Source: Complete Mage