Call of the wild

The caster enhances the natural armor by +3 and gives 1d6 extra damage on attacks with natural weapons of beasts. These buffs only apply to beasts without any armor on the specific bodypart. The cast can affect 2 beasts

For each spellslot above 2nd deal +1 damage and
4th affect 3 beasts and increase armor by 4
6th affect 4 beasts and increase armor by 5
8th affect 5 beasts and increase armor by 6

The caster can also choose to end the spell early by expending a bonus action