Rhythm (charges)

If you wanted to see the funky rhythm, go here.

When a Blademaster kills enemies, they get a series of points called rhythm, gaining one point per enemy killed. These points of rhythm can be spent to execute special attacks, or as charges in a calibrating claymore, with more rhythm allowing the claymore to do more damage. These two uses are interchangeable; you can still spend rhythm to execute special attacks while using a calibrating claymore. Your rhythm is likely to run out quickly if you do, however.