Polearm Master

Polearm Master
Feat
Prerequisite: Level 4; Ability STR 13+ or Level 4; Ability DEX 13+

You gain the following benefits.
Pole Strike.
Immediately after you take the Attack action and attack with a Quarterstaff, a Spear, or a type=melee weapon;ranged weapon, you can use a Bonus Action to make a melee attack with the opposite end of the weapon. The weapon deals Bludgeoning damage, and the weapon's damage die for this attack is a d4.
Reactive Strike.
While you're holding a Quarterstaff, a Spear, or a type=melee weapon;ranged weapon, you can take a Reaction to make one melee attack against a creature that enters the reach you have with that weapon.

Source: Player's Handbook (2024) (XPHB), page 206