Staff Master

Martial Feat (Prerequisite: Level +4)

While you are wielding a bo staff, club, greatclub, or quarterstaff and no other weapons, you gain the following benefits:

• Gain +1 to your Dexterity or Strength score to a maximum of 20.

• As a bonus action on your turn, you can take a defensive stance, gaining a +2 bonus to AC until the start of your next turn.

• As a bonus action on your turn, you can make a melee weapon attack against a creature no more than one size larger than you. On a hit, you deal no damage but instead push the creature 5 feet or knock it prone.

• The first time each turn you score a critical hit on a creature, it is incapacitated until the end of its next turn.