Scimitar Dance

Paragon Tier
Prerequisite: 11th level, Str 15, Dex 17
Benefit: If you miss with a melee attack with a scimitar and you wouldn't otherwise still deal damage on the miss, you deal damage to your original target equal to your Dexterity modifier. This damage receives no modifiers or other benefits you normally gain on weapon damage.

Published in Player's Handbook, page(s) 205.