If the best plan wouldn't work, he could only move on to an alternative.
According to his plan, he needed the soul of a pure Immortal Dao Golden Core. The soul from a Bloodline Golden Core, on the other hand, would only conflict with his Sword Intent due to erosion from the bloodline.
Sword Intent demanded purity. His Divine Soul Saber, residing in his Sea of Consciousness, would strike down any foreign invader it could.
After being eroded day in and day out by a Demon Beast Bloodline, a Bloodline Cultivator's Divine Soul couldn't even dream of bearing the sharpness of his Sword Intent. The moment the two met, it would likely be instinctively repelled and annihilated by the Sword Intent.
As for the soul of a pure Immortal Dao Golden Core, the higher its Golden Core Realm Cultivation, the better.
The higher the Cultivation, the better the final result would be when he refined it with his Sword Intent.
