The way this Build works is that you'll be wielding the Coded Sword, which deals 100% Holy Damage and only scales with Faith. You'll use Sacred Scorpion Charm, Ritual Sword Talisman and Holy-Shrouding Cracked Tear to boost its damage. Use Unblockable Blade for a small cluster of enemies, or against Bosses or enemies that use Shields.

Discus of Light is your go to offensive Golden Order Incantation, and its boosted in damage by Sacred Scorpion Charm, Ritual Sword Talisman, Holy-Shrouded Cracked Tear, Golden Order Seal and Radiant Gold Mask. You could even slot Flock's Canvas Talisman for more damage if you wish. You can chain spam this spell to deal with many enemies and Bosses from a distance.

Triple Rings of Light is used to deal with enemies that dodge when you fling spells, like Black Knife Assassins, Bloodhound Knights, or Godskin Apostles. It deals slightly more damage than Discus of Light on average, but costs about 3x the FP, so I don't advise using it regularly.

Radagon's Rings of Light is a fantastic AoE spell that can wipe out huge packs of enemies, especially if you hold down the cast button, since this further increases range. This can be used from horseback as well, and if it doesn't kill enemies, it will knock them down allowing for easy follow up casts. It has further range and damage than Wrath of Gold, and is also boosted by Golden Order Seal and Radiant Gold Mask.

Elden Stars is your super long range spell that's good at picking off enemies from a long distance, or harassing Bosses while you attack with other spells or Unblockable Blade. You won't use it often, but it's nice to have when you need it.

Litany of Proper Death you will only use against Undead enemies, so only slot this when you need it. And Golden Vow is there to increase damage and defenses further, and Blessing of the Eerdtree is there to keep your HP topped off to proc the effects of Ritual Sword and Ritual Shield Talismans.

Sword of Knight and Flame is useful against Holy Damage resistant enemies, and you should sub this in when needed. Be sure to swap out Sacred Scorpion Charm for Magic or Fire, and to replace Holy-Shrouded Cracked Tear with Magic or Fire as well. Shard of Alexander is also a nice addition here.