the story was released when shared XBB system had not been setup before. Today just have a try for this star mission.
...
https://www.youtube.com/watch?v=RiaknItieQI
Deadly Strike:
- every 5 turns
- when HP at 75%, it must kill one unit.
- when HP at 50%, it must kill one unit.
- when HP at 25%, it must kill two units.
- regular damages are quite heavy for non-tree units.
...
https://www.youtube.com/watch?v=xI0nTGwBQYQ