Consecrated Armor

1st-level abjuration (ritual)
Casting time: 1 action
Range: Self
Target: Self
Components: V, S, M (a drop of blessed oil)
Duration: 8 hours
Classes:
Subclasses:

You trace a holy symbol on your chest, and an invisible barrier protects you until the spell ends. Your base AC becomes 12 + your Dexterity modifier. If you are attacked by a Fiend or Undead, your AC becomes 15 + your Dexterity modifier against that attack.