With a 5 barbarian splash to my build (1 fighter 5 cleric presently, looking at 9 cleric/ 6 fighter/ 5 barbarian)
At BAB 8 Improved critical feat is available to all classes.
Description
This feat adds 1, 2, or 3 to critical threat range based on the weapon type's unmodified threat range.
+3 for falchion, great crossbow, kukri, rapier, and scimitar.
+2 for bastard sword, dagger, greatsword, heavy crossbow, khopesh, light crossbow, long sword, repeating heavy crossbow, repeating light crossbow, short sword, and throwing dagger.
+1 to all other weapons.
Improved Critical does not stack with the Keen or Impact weapon enchantments.
There are 3 options from barbarian all a form of critical bonuses.
1. Frenzied Berserker Focused Wrath: 2 competence bonus to Critical Multiplier. (works on shields as well)
2. Occult Slayer- Occult Metalline: +1 Competence Bonus to Critical Threat Range and Critical Multiplier.
3. Ravager- Critical Rage: Increases your Critical Threat Range by +2 (competence bonus). Does not require rage.
I can see why this is such a popular splash right now. There is some nice adds for all builds here.
So for myself with a khopesh the weapon itself has + 1 crit threat range +3 crit multiplier
With IC feat i have a total of +3 and +3 nice balance.
Now the barbarian tier 5 choice i thought about what would be best and taking into account that bonuses dont stack:
I have kensai core 3 available for +1 crit multiplier (fighter level 6).
So i would be best to take Ravager tier 5 Critical Rage?
+5 crit threat range +4 crit damage multiplier.
My potential critical with my current build plan:
tier 5 keen edge +1 crit threat range and kensai core 3 strike without thought +1 crit multiplier
+4 crit threat range +4 crit damage multiplier.
Is one critical threat range worth it?