ABOUT THE MOVE:
Quickly lunge forward, leaving blue sparks behind you. Landing it after proccing the true pierce passive (applied by landing vertical down or split gate) will initiate a short cutscene. Failing to mark them with the true pierce before landing the horizon core will ragdoll them for a short amount of time and do substantially less damage. However, you can use vert or split gate directly after to initiate a true pierce without having to do vertical down/split gate. You can also initiate two true pierces in one combo by doing vertical down and split gate beforehand, then using Horizon Essence.
REQ: 40 KENDO