The way this Build works is that you increase your Intelligence and Faith high enough to use Sword of Night and Flame and Ancient Death Rancor, which requires 34 Int and 24 Faith.

Sword of Night and Flame has an amazing Weapon Art that allows you to do a Comet-like beam with L2 and R1 that does insane damage and has great range. L2 and R2 is a flame strike in an AoE in front of you that can wipe out packs of enemies.

Rancorcall and Ancient Death Rancor require Intelligence and Faith to use, so are a natural fit here. Meteorite Staff is not the ideal staff to use here, and you'll want to swap this out for Prince of Death's Staff once you get it, as it scales off both Int and Faith. It also boosts the damage of Death Sorceries, which both of these are.

Ancient Death Rancor does incredible stagger damage to enemies, allowing you to pin them down if you spam this, which is fantastic solo and in co op play. It's particularly good against fast moving enemies and bosses that are hard to hit with Sword of Night and Flame's Weapon arts