Corrupting Presence is a heroic tier feat.
Prerequisite: Any divine class, must worship Vecna
Benefit: When you use a divine encounter or daily attack power that has the necrotic keyword, you can create a zone in a close burst 1. The zone lasts until the end of your next turn. Bright light in the zone becomes dim light. Allies in the zone gain a +1 power bonus to attack rolls with necrotic powers.[Dr395]