Helcurt remains in the Prowler state until spotted by the enemy team, gaining 15% extra Movement Speed, and continuously regenerating (+50% Total Physical Attack) HP if he has not dealt any damage.
He gains and 50% extra Movement Speed (decreasing over time) for 4s upon being spotted and leaves Prowler state 0.75s later.
Any hero killed after hit by Helcurt leaves a dark fog that explodes and spreads with a cooldown of 10s. Helcurt Conceals himself while within the dark fog.