>>718787268
The trick is to use the other longsword knight weapon for variation.
>Int Build?
Carian Knight Sword and Phalanx Spells with Mirian's Vanishing for increased mobility, or alternatively Glintstone Ash's on with Scholoars Spells and Frozen Aarmaent on normal weapons.
>Fth Build?
Grab the Sacred blade Ash of War at the start of the game for your normal weapon, Grab the Coded and Miquellan Knight's Sword later on for variation, and run any of the shit ton of the buff spells. Or again a normal weapon with and casting Electricity, Poison, or black flame buffs.