You can utilize a holy symbol (see the Adventuring Gear part) for a spellcasting focus for your cleric spells.
Arcana Domain Arcana area Clerics get usage of handy spells and cantrips with the Wizard spell list, https://crithitceramics.com/mastering-the-divine-a-beginners-guide-to-playing-a-female-aasimar-cleric-in-dd/