OK everyone, a new challenge for you. What's the most fun we can have with a giant crit range and multiplier? Here's your chassis:
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Human Warblade 6/Disciple of Dispater 8
Feats:
1 Power Attack, EWP: Talenta Sharrash, Combat Expertise (flaw), Disciple of Darkness (flaw)
3,6 Open
9 Improved Critical: Talenta Sharrash
Weapon: Laminated Serrated +1 Talenta Sharrash
Crit range: 19-20 +1 (serrated) x2 (improved crit) x2 (DoD 4) x2 (DoD 8) = 9-20
Crit multiplier: x4 (base) +1 (laminated) = x5
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What you have to play with: 6 levels, 5 feats, weapon enchantments, any other equipment. If you want to change part of the chassis for a particular greater effect, go ahead. If you want to change the weapon its pretty trivial, since the Warblade can swap EWP and IC for whatever.
What I want: What kind of effects can we get for a >50% chance of a crit on a x5 multiplier?
What I DON'T want: Abuse of lightning maces, roundabout kick, and aptitude weapons to get infinite attacks. I'm looking for the greatest effects that happen on critical hits, expounded by the x5 multiplier. (In that vein, anything that increases the crit multiplier is excellent.)
What monstrosities can you produce?