Master of the Arena

You gain the following benefits:

• When you take the Attack action and attack with only a glaive, halberd, quarterstaff, or spear, you can use a bonus action to make a melee attack with the opposite end of the weapon. This attack uses the same ability modifier as the primary attack. The weapon’s damage die for this attack is a d4, and it deals bludgeoning damage.
• Your Hit Point maximum increases by an amount equal to twice your character level when you gain this feat. Whenever you gain a character level thereafter, your Hit Point maximum increases by an additional 2 Hit Points.