The Shadow Lord has intervened, accumulating all kill score. As enemies are killed, Shadow Orbs are spawned nearby that can be collected by heroes.
Upon collecting 30x Shadow Orbs, an Emissary of the Shadow Lord will arrive to challenge you. Defeating it will reward Kill Score.
BONUS
Each time an Emissary of the Shadow Lord is defeated, heroes gain Shadow's Defeat for 60 seconds, increased all damage dealt by 20% and increasing Haste and Movement Speed by 20%.
