Your oracular abilities improve as your piety score increases. Instead of gaining the piety benefits associated with any god, you gain the following traits when you reach the specified piety score.
Wisdom is your spellcasting ability for any spell that you cast through these traits.
Augur
Piety 3+ Oracle trait
You can cast Augury as a ritual with this trait. Once you do so, you can't cast it in this way again until you finish a long rest.