Suggestion: add an ingame command to active autocast for this skill.
The skill is used in two steps:
1 step: aim direction, which is a point selected by the player;
2 step: press the skill button to release the damage effect at the travelling point.
This autocast will turn this skill into one step. So, when the player aim the skill, it will be automatically released in the aimed point.
Why?
(1) Sometimes it is hard to release the skill near the caster hero; (2) Sometimes it is convenient to not pay attention to the second step; (3) Delay issues make this skill very unpractical.