Ideas on how to complete this gestalt

[Matamane]

Here's the build so far

Racial|Bard
Racial|Bard
Racial|Bard
Barbarian|Bard
Dread Witch|Bard
Dirgesinger|Bard
Dirgesinger|Bard
Dirgesinger|Bard
Dirgesinger|Bard
Dirgesinger|Bard
Sublime Chord|Bard
Dread Witch|Bard
Dread Witch|Bard
Dread Witch|Bard
Dread Witch|Bard
Mindbender|Bard
?|Bard
?|Bard
?|Bard
?|Bard


Any ideas. The concept is an undead fear mongering bard

[Biffoniacus_Furiou]

Fatespinner 4 is pretty good. Divine Oracle 4 is another decent choice.

[Matamane]

Why is fatespinner considered a good class? I never understood that. What about divine oracle?

[Jarian]

Why is fatespinner considered a good class? I never understood that. What about divine oracle?

By giving up nothing except a few skillpoints in Profession (Gambler), you can increase the DC of a critical spell by 4, and then force your enemy to reroll his saving throw against that spell.

Plus other neat stuff.

[Biffoniacus_Furiou]

Anything that fully progresses your spellcasting and grants additional special abilities on top of that is good. Divine Oracle gives you Evasion and Uncanny Dodge along with a few other things. Fatespinner is good because rerolling a failed save, or forcing an enemy to reroll a successful save, even if only usable 1/day is extremely good, plus it gets the DC boosting effects.

Another 4-level dip to look at is Incantatrix from PGtF, you can use the Otyugh Hole detailed in Complete Scoundrel to get the Iron Will prerequisite without spending a feat on it.