Swordmage Attack 9Beacon Blade
As you slash at your foe, your sword glows with a blinding light, banishing the gloom around you.
Daily Arcane, Weapon
Standard Action Melee weapon
Target: One creature
Attack: Intelligence vs. AC
Hit: 1[W] + Intelligence modifier damage, and the target is blinded (save ends).
Effect: The target is illuminated untl the end of the encounter, shedding bright light within 10 squares around it. Even if it turns invisible, its location can be pinpointed automatically, though the normal -5 penalty to the attack roll still applies.
Published in Forgotten Realms Player's Guide, page(s) 30.