This combo is Why we shouldn't buff reworked Pantheon (Animation Canceling)

With 5 stacks of Mortal Will (passive) you can execute just about anybody with this combo with 40%cdr:

(5 stacks of passive) -> W +Tap Q (cancels the triple auto-attack and allows the Q to be up faster) > Basic attack to proc the triple hit > Basic attack and attack move > Q + 5 stacks of passive. E'ing away is good when used last for disengage or for blocking towers (potentially block 2 shots if times right regardless of it being empowered or not). With Electrocute and maybe tiamat, this combo will win you every trade in the game.