Burnt Offering

1st-level abjuration (ritual)
Casting Time: 10 minutes
Range: Self
Components: V, S, M (a pyre and slain animal)
Duration: 24 hours
By constructing a pyre and burning an animal’s corpse, you court the favor of the gods. For the duration, you can add your Wisdom modifier, instead of your Dexterity modifier, to your Armor Class.
At Higher Levels. If you cast this spell using a spell slot of 3rd level or higher, you can also reroll one saving throw you make during the duration. You can choose to reroll the saving throw after you roll the die, but must decide before the outcome is determined and must use the new roll.