About Divine Vengeance feat and more.

[Shantis]

Divine Vengeance
Prerequisite: Turn Undead, Extra Turning

Add 2d6 Divine damage to all melee attacks against undead enemies for 5 rounds. Costs 1 Turn Undead use.

1 - Add +1 round of duration in each 3 levels, to limit of 10 rounds.

Cleric levels:

level 01 = 5 rounds

level 03 = 6 rounds

level 06 = 7 rounds

level 12 = 8 rounds

level 15 = 9 rounds

level 18 = 10 rounds

2 - In epic cleric level, a cleric can request using an appn an epic feat, to get an enhanced effect against outsiders. A name like "Planar Vengance" sounds good. This feat is like "turn undead" enhanced with "Planar Turning", but following the proportions  of Divine Vengeance to a planar version.

Planar Vengance

Epic Feat

Requeriment: Divine Vengeance

Effect: Dismissal effect on hit