When combat resolves at one battlefield, does damage get removed from units at other battlefields that were not involved in the combat?

Ruling: Yes, when combat fully resolves, all marked damage is cleared from all units at all locations, including units at battlefields that were not involved in the combat.

Sequence:

• Combat occurs at one battlefield
• Combat fully completes and enters the resolution step
• All marked damage is cleared from all units at all locations simultaneously

Nuances:

• This applies even to damage dealt earlier in the turn (such as from Hextech Ray) to units at different battlefields
• This rule is not intuitive and can lead to misunderstandings about staging or baiting reactions