Wondrous Item, very rare (requires attunement by a Requires Attunement by paladin)
This amulet bears the symbol held dearly to the wielder inlaid with precious stones or metals. While you wear the symbol, you gain a +2 bonus to the spell attack rolls and the saving throw DCs of your paladin spells.
Additionally you may choose the following option as an additional Channel Divinity Option:
As an action, you may expand the radius of all your auras an additional 10ft. This includes the aura of protection, courage, and any other item or specific aura that is granted by a feature. This aura increase doesn't affect any spell effects or aura granted by spells.
Notes: Bonus: Spell Attacks, Bonus: Spell Save DC, Requires Attunement by paladin