It sounds like you’re looking for a Pact of the Blade Warlock, not an EK. Making Int your weapon stat for EKs might have some unfortunate effects on a Fightet/Wizard multiclass, which is already generally stronger than regular Fighters.
The draw of the EK is typically the stat independent spells, like Shield, and Bladeward+Warmagic. They’re a tank class, which has some unfortunate side effects in dnd 5e, since tanking is generally ineffective.
In BG3, EKs typically want to be throwing weapons builds with Tavern Brawler, since Bound Weapon automatically returns to your hand when thrown.
