You must keep your staff on the corpse for 5 out of the 10 seconds that it lays there. They do not have to be consecutive seconds. There will be a little UI bar indicating how much more time you need to hold left click down on the dead ally. Same cool down, or change it a little bit, either way.
7 posts were merged into an existing topic: [Feedback Thread Continued Part III] Mercy Updates - Jan 30, 2018