Charge

If the warbeast moves at least 20 ft. straight toward a target and then hits it with a tusk attack on the same turn, the target takes an extra 4 (1d6) slashing damage. If the target is a creature, it must succeed on a DC 13 Strength saving throw or be knocked prone.  

Endure

As an action on the warbeast's turn, or as a command on your turn, the warbeast can use any amount of its hit die to heal itself. The warbeast can only do this once per long rest.   Upon reaching 3rd level, and then again at 6th, choose one of the abilities below to add to your warbeast.  

Unrelenting

The warbeast can take an extra attack action on its turn. Additionally, when you and the warbeast are within 10 ft. of each other, and if either of you were to be reduced to 0 hit points, the other can use a reaction to transfer an amount hit points from their own hit point pool to the other's equal to half your level. This reaction can only be done by each of you once per long rest.  

Thunder Boar Lineage

Prerequisite; 6th level
Once per long rest, the warbeast can use an action to cast the lighting bolt spell. When doing this, it uses its STR modifier as its spellcasting ability instead of your CON.  

Bolsterous Charge

When using the charge ability, the warbeast deals an extra 2d6 slashing damage instead of 1d6. Additionally, if the warbeast moved an extra 10 ft. straight toward the target when using the charge ability, the DC to avoid being knocked prone is increased to 13+CON, and the target is also pushed 10 ft. backwards. The warbeast also gains resistance to bludgeoning, piercing, and slashing until its next turn if it knocked a target prone on its turn.