Yorick Ability (LoL): Mourning Mist

Yorick throws a globule of Black Mist that deals 15% current health as magic damage (min: 70 / 105 / 140 / 175 / 210 (+70% of ability power)), slows by 30% for 2 seconds, and marks champions and monsters for 4 seconds.

Marked enemies continuously awaken nearby graves (but not exceeding the maximum of 4, and take 30% increased damage from up to 8 attacks by Mist Walkers. Yorick and his summoned units gain 20% movement speed toward the mark. Mist Walkers will leap once at marked enemies that get away from them.