If a unit with 4 might and assault 1 is attacking and gets marked to 4 damage (5 might, 4 marked damage), then is returned to base with Flight or Fight, does it die from losing assault before Back-Alley Bar can give it +1 might?

Ruling: The unit dies. After Flight or Fight resolves, Back-Alley Bar's ability finalizes during cleanup, but the unit loses its attacker designation in that same cleanup, triggering a second cleanup where the unit dies (4 might, 4 marked damage).

Sequence:

• Flight or Fight resolves, returning the unit to base
• First cleanup occurs: Back-Alley Bar ability finalizes AND unit loses attacker designation (losing assault 1)
• Removing the attacker designation triggers a second cleanup
• During the second cleanup, the unit dies from having 4 might and 4 marked damage

Nuances:

• Two cleanups are required because removing the attacker designation causes the first cleanup to loop into a second cleanup
• The Back-Alley Bar buff and loss of attacker designation happen in the same cleanup, but the death check occurs in the subsequent cleanup