Heavy Blade Expertise

Benefit: You gain a +1 feat bonus to weapon attack rolls that you make with a heavy blade. This bonus increases to +2 at 11th level and +3 at 21st level.
    In addition, while wielding a heavy blade, you gain a +2 bonus to all defenses against opportunity attacks.

Published in Heroes of the Fallen Lands, page(s) 314, Heroes of the Forgotten Kingdoms, page(s) 315.