Loot Tavern
Every weapon can perform a devastating attack called a superior strike. The tier 2 advanced superior strike technique of each technique tree gives you access to the superior strike for all weapons with that property. For example, upon taking the advanced technique Superior Strike: Heavy from the Heavy technique tree at martial level 6, a character can perform a superior strike with any Heavy weapon, such as a greatsword, pike, or glaive.
Each weapon has a certain superior strike tied to it. For example, a glaive has the Whirling Strike superior strike, whereas the greatsword has Shockwave. Because both of these weapons have the Heavy property, a character with the Superior Strike: Heavy technique can perform either superior strike if they are holding the requisite weapon.
When you take the Attack action on your turn, you can choose to make one superior strike in place of one of your regular attacks. You can perform superior strikes in this way a number of times equal to your proficiency bonus, but no more than once per turn, and you regain all expended uses when you finish a long rest. Like other advanced techniques, when your superior strike forces a creature to make a saving throw, it is against your martial save DC (8 + your proficiency bonus + your ability modifier + other attack roll bonuses).