Talk:Arcane Comet/@comment-24659969-20180426104502

Like other runes, this rune disabled on death. On travel comet however will still deal damage and any ability damage dealt while dead will still reduce the cooldown.

To note that the cooldown reduction is quite strange. Also this skill cooldown can not be reduced to certain X point or percent of the original cooldown. The easiest way to test this is by using Singed and 3 target dummies. Even with repeated Q ON-OFF toggle, the comet cooldown can not be reduced any further after hitting 25%. Although in URF, this can be further reduced with level limit increased.

Also, the cooldown priority is lower first. So with Singed Q or Teemo R, it prioritize DoT reduction first (5% per enemy hit).