Polearm Master
You can keep your enemies at bay with reach weapons. 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. The weapon's damage die for this attack is a d4, and the attack deals bludgeoning damage. This attack uses the same ability modifier as the primary attack.
While you are wielding a glaive, halberd, pike, quarterstaff or spear, other creatures provoke an opportunity attack from you when they enter the reach you have with that weapon