Err ... EK hardly gets anything out of intelligence.
EKs are full featured fighters. Just like Champions. Just like Battle Masters.
With a very minimal dose of Wizard. With a very small number of spells. With no higher access to spells than spell level two and even that happends very late.
They dont get extra spells from Intelligence. They learn spells like a Sorcerer.
They dont need high spell DC. Really you should focus on buffs and defense spells, not on attack spells. At most maybe get Magic Missle, which doesnt use DC and always hits.
