Lunge Mechanic does not allow entities to lunge upwards towards the Target Location.
Title - the Lunge mechanic only applies x / z axis momentum, and doesn't allow the caster to move upwards towards the Target. This limits what can be done with the mechanic, such as aerial attacks and upwards lunges.
I understand that vy controls the y momentum, however, it is not precise and does not allow you to lunge directly towards the target location.
I propose adding the dtt=true (direction towards target) parameter to Lunge, so the caster is launched at a constant velocity towards the Target.
Alternatively, ddt=true could be added to the velocity mechanic, orienting the "relative" direction to face towards the target when running the mechanic with relative=true.