When Lee Sin (centered) dies from lethal damage in combat, does another unit on the battlefield that was buffed by Lee Sin's aura (from 4 might to 6 might) and took 4 damage also die before damage is cleared during cleanup?

Ruling: The buffed unit survives. During combat cleanup, units with lethal damage are killed first, then all damage is cleared from all units. The buffed unit loses the might bonus when Lee Sin dies but is healed before the game checks for lethal damage again.

Sequence:

• Combat damage is dealt to all units
• Combat cleanup begins with special steps inserted
• Units with damage equal to or exceeding their might are killed (Lee Sin dies)
• All marked damage is cleared from all units (the other unit is healed to 0 damage)
• The cleanup completes
• If another cleanup is needed, it occurs after the first completes (but the unit now has no damage marked)

Nuances:

• This ruling may have changed multiple times in previous versions of the rules
• The interaction is somewhat unintuitive because the unit loses its might buff when Lee Sin dies but doesn't die itself
• Cleanups happen constantly throughout the game, and anything occurring during a cleanup cannot stop that cleanup from completing all its steps