Lost Explorer

It's is, very dangerous to travel those unknown lands with a small group. Unfortunately, our explorer as has disappeared and we have never hear of him again...

Who know what happen to them... Maybe Should we envisage to send a much larger expedition the next time, to increase our chance of success

Choice
It's too bad = The Formation is lost.

Extra Info
We don't know what exactely number of unit we need to prevent that but we can speculate and say this for now :

10 units and more is preventing this event.

It seemes that 5 units just do fine