Class and Level Geekery VIII (spoilers ahoy!)

[Douglas]

The DC 59 is a Spellcraft/forge check to develop and learn the spell, right?

It might be required for successful research, I'd have to check, but the important part here is that it is required each and every time you cast the spell. Thus, to explain the Darth V fight well Xykon needs to be able to reliably make it (taking 10 is explicitly allowed) at any time with no warning or special preparation.