Archmage Spell-Like Ability's DC is 1 lower than normal spell

[Charraj]

When normally casting Wail of the Banshee on my toon (13 Wizard/4 Archmage), the DC is 31. When casting Wail as a spell-like ability, the DC is 30.

I suspect the Spell-Like Ability feat is not taking Spellcasting Prodigy into account.

My toon's DC should be:
10 + 9 (INT modifier) + 2 (Greater Spell Focus) + 9 (Wail's spell level) + 1 (Spellcasting Prodigy) = 31

So I'm pretty sure Spellcasting Prodigy is the part of the equation being left out.

Don't know if this has been reported before. Thanks!

[Valefort]

The feat is just a wrapper and after testing in game I saw no difference

Try casting spell from the spellbook and then SLA immediately after (or the other way around) and see what the numbers are ? I suspect the spellhook to mess some things up but it's not tied to SLAs.

[Charraj]

Maybe it is failing to take Archmage's Spellpower into account? Tested again, and DC is still 1 lower than it should be.

I tried doing what you suggested. I casted normally, then I casted the SLA immediately afterward:



Then I casted the SLA first, and the normal spell immediately afterward: