Three-Section Staff (5e Equipment)
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Simple Melee Weapons
When you take the Attack action and attack with the three-section staff, you can use a bonus action to make another attack with the three-section staff. If this attack hits, you deal 1d4 bludgeoning damage. You don't add your ability modifier to the damage of the bonus attack, unless that modifier is negative.
If you have the double weapon master feat, you gain a +1 bonus to AC against melee attacks when wielding a three-section staff.