War Wizard's Expertise
Prerequisite: Any arcane class
Benefit: You gain a +1 feat bonus to the attack rolls of arcane powers and basic attacks that you make with a light blade or a heavy blade. This bonus increases to +2 at 11th level and +3 at 21st level.
Also, when you use an arcane attack power with a light blade or a heavy blade, your attack rolls take a –5 penalty against your allies.