If Sett's The Boss ability saves a unit by removing its buff, and that unit has -4 might from Smoke Screen, does the unit die again with 0 max might?

Ruling: The unit does not die. Units only die when they have non-zero damage equal to or greater than their might. A unit with 0 might and 0 damage does not meet the lethal damage condition.

Sequence:

• The Boss's effect replaces death with not death
• The buff is removed from the unit
• The -4 might from Smoke Screen remains as a continuing effect
• The unit survives at 0 might because it has 0 damage (non-zero damage is required for lethal damage)

Nuances:

• Healing removes damage, but does not remove continuing might modification effects
• Recall moves units to base, but does not remove continuing effects
• The Boss only replaces the death itself, it does not remove other continuing effects