Looked up "Shared Destruction" and it is listed as the mechanic for Master Li and The Sniper in Kaineng Ovelook Strike mission.
As taken from the Kaineng Overlook walkthrough on the wiki:
"If marked by the Greens mechanic, the player should stay behind Minister Li to avoid getting launched and maintain predictable movement. Players not marked by a mechanic should stand within the green circle. "
Same Issue in Echovald Wilds, Oni is un-targetable and has no health bar , but the event is showing in the sidebar with an active timer ticking down, and an icon on the map.
These things stack up quick and now have no use, other than keeping track of your number of kills. Sure would be nice if they had a use or could be spent/traded for something.