Focused Wrath

Paragon Tier
Prerequisite: 11th level, invoker, Covenant of Wrath class feature
Benefit: When you use your armor of wrath power and the triggering enemy is the only enemy in the burst, you deal 1d6 extra damage with that power.
At 21st level, this extra damage increases to 2d6.

Published in Divine Power, page(s) 138.