Each time Charged Skill: Piercing Dart hits a unit, you gain 0.5 seconds of Tenacity, counting up to 4 targets…
Each time Charged Skill: Piercing Dart hits a unit, you gain 0.5 seconds of Tenacity, counting up to 4 targets hit. Hitting a unit with Tenacity grants double the effect. This effect can trigger once every 15 seconds.