Billy - Beast of the Land

Charge. If the beast moves at least 20 feet straight toward a target and then hits it with a maul attack on the same turn, the target takes an extra 1d6 slashing damage. If the target is a creature, it must succeed on a Strength saving throw against your spell save DC or be knocked prone.

Primal Bond. You can add your proficiency bonus to any ability check or saving throw that the beast makes.

Maul. Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target. Hit: 1d8 + 2 + PB slashing damage.