Help - Sun Elf : DC Spell like ability Sunburst ???

[archerforever]

Hello everyone, I have a question about the "Amaunator's Brilliance" Spell Like Ability: Sunburst in the Morninglord enhancement Tier 4.

What is EXACTLY the DC of this spell ???

It s said that it s based on wisdom, ok... But...

1- Does Evocation bonus you can get with feats, stuff, EDs apply on the DC of this spell like ability ???
2- If you are multiclassing, does the DC increase with the character level or apply with the highest caster level or maybe only based on cleric caster level ???
3- Does heighten can increase the DC of this spell like ability ???
4- Does epic destinies core increasing caster levels increase also the DC of this spell like ability ???


Thanks if you can help me