Joachim Meyer's "The Circle"(Zirckel)

A false edge cut followed by a forward edge cut aimed at a different location. The blade's path resembles the titular "Circle". This move allows one to make two cuts in the same beat, essentially doubling up the cut.

When making an attack using a weapon with the light or versatile properties, you can use this ability to grant yourself +1 attack per action.

3 Uses/Long Rest

At level 11:  6 Uses/Long Rest, missing the first attack roll grants advantage on the second attack roll.