Regarding lich

Lich the unique mercenary seems to have a tech that allowed it to cancel it's basic attack into a loop, I'm having a problem for the last month tried to do so. From the animations it seems to be using it's D hold to cancel, but if it that's easy I wouldn't be having headache for a month I reckon there's an additional move or button to press to do so but for the first time since forever I couldn't figure it out. If anyone, anyone would be so kind to share how I welcome the information the people need to know how to do this.