You should use a holy image (see the Adventuring Gear segment) to be a spellcasting emphasis for the cleric spells. Arcana Domain Arcana Domain Clerics get entry to useful spells and cantrips through the Wizard spell https://crithitceramics.com/mastering-the-divine-a-beginners-guide-to-playing-a-female-aasimar-cleric-in-dd/