Overall Rating: Green. This means that
primal savagery is a good spell.
Overall Notes: Between levels 1-4, shillelagh will be a better option assuming you have a WIS modifier of +2 or higher. After 5th level, primal savagery will start doing an average of 11 damage, which will be higher on average than shillelagh as long as you aren't able to take multiple weapon attacks.