Yorick Ability (LoL): Shepherd of Souls

Yorick raises a grave for every 12th / 6th / 2nd enemies that die near him. Champions and large monsters always leave a grave.

These graves can be used to summon Mist Walkers with Awakening and Eulogy of the Isles. Mist Walkers have 110-212 (+20% maximum health) health and 2-88 (+0.25 of attack damage) attack damage, and Yorick can control up to 4 in an area (depedning on level).