The talent which adds haste to Exorcism can be abused currently. The haste it grants lasts until every single spirit has fully returned to Death Prophet.

The issue is, the spirits move slower than a hasted unit does. They have a movespeed of 500, 50 lower than a hasted unit, so Death Prophet can outrun the spirits forever to keep perma-haste.

Current: The haste lasts until the spirits finished returning to the caster.

Solution: The haste lasts until the spirits start returning to the caster.