Kensai [Base Class]

[Typewriter]

Like someone else said the +50% attack/damage being taken multiple times is pretty ridiculous. Go invisible, but don't come visible when striking? Greater invisibility?

Mainly though I was referring to the fact that you have a good class build, with fitting abilities, a few class feats, granted powers, inherent bonuses with weapons - and then you add stuff on top of it. Not to mention two good saves and a fighter BAB.

If you consider fair making this comparable to the most powerful thing you can find, then yes - removing a few abilities (like the 50%) it would be comparable. But what role are you trying to fill here? This class would be a fighter variant, and you're going above and beyond filling the same role of a fighter. Without the Ki table you'd be on par with a fighter.

Ki table
Next strike x 1/3 level? So at level 18 youd multiply damage by 6?
Elemental damage that multiplies on a crit?
Greater Invisibility?
Attack/damage +50% str bonus?

Comparable to some things, that's not that bad, but if you want a broken fighter type just take something from the Tome of Battle and say he has a kensai personality. If you want a good build, lose the ki table. That's my opinion anyway.