Amphibious. The beast can breathe air and water.
Primal Bond. Add your Proficiency Bonus to any ability check or saving throw the beast makes.
Beast's Strike. Melee Attack Roll: Bonus equals your spell attack modifier, reach 5 ft. Hit: 1d6 + 2 plus your Wisdom modifier Bludgeoning or Piercing damage (your choice when you summon the beast), and the target has the Grappled condition (escape DC equals your spell save DC).