Weapon

Common

Light. A light weapon is small and easy to handle. You can use either your Strength or Dexterity modifier for both the attack and damage rolls.
The Finesse property has been combined with the Light property. Anything that would require Finesse (like the Rogue Sneak Attack feature) and any weapon that uses Dexterity for its attack and damage rolls works with this property.
Staff. You have ADV on Opportunity Attacks made with a staff. Opportunity Attacks made against you have DisADV while you are wielding a staff. When you take the Disengage Action and move away from a creature within your reach, you can make an Opportunity Attack with a staff you are wielding against that creature, before leaving your space.You only gain this benefit if you are proficient with the weapon. You only gain this benefit if you are proficient with the weapon.
Bludgeoning. On a critical hit, the target is knocked 5ft in a direction of your choice and falls Prone.

Martial Special Attacks

When you land any attack in combat you can choose to make it a Special Attack by expending one of your extra attacks. The additional bonuses below are either added immediately to the attack you just landed for extra effects OR expended before you make the attack for ONE all-in strike.
Each of these Martial Special Attacks have certain requirements and if the target needs to make a save, it's always against your Martial Save DC.

Staff. On a hit, you can forgo 1 extra attack to force the target to make a Str or Dex Save (target’s choice). Failure. The target takes 1 extra die of damage from the attack and falls Prone.
Martial Save DC. (8 + prof. bonus + Strength or Dexterity modifier)
Concussive Strike. On a hit, you can forgo 1 extra attack to force the target to make a Con Save. Failure. The target becomes Stunned until the end of your next turn. Once Stunned from this Special Attack, a creature is immune to the technique for the next 24 hours.
Martial Save DC. (8 + prof. bonus + Strength or Dexterity modifier)
Feint. When you make a weapon attack, you can forgo 1 extra attack to make a Deception Check vs the target's Insight Check. Success. You gain ADV on your attack roll and deal 1 extra die of damage on the attack.
Martial Save DC. (8 + prof. bonus + Strength or Dexterity modifier)
Stagger (Combo). On a hit, you can forgo 1 extra attack to force the target to make a Con Save. Failure. The target becomes Vulnerable to the next source of Slashing, Piercing, or Bludgeoning damage before the start of your next turn. You can only do this once per combat.
Martial Save DC. (8 + prof. bonus + Strength or Dexterity modifier)