Does Flurry of Blades damage units at multiple battlefields simultaneously, and if so, would that damage persist on Warwick when moving to a second battlefield after combat at the first?

Ruling: Flurry of Blades does damage units at multiple battlefields simultaneously. However, the damage does not persist when Warwick moves to a second battlefield because all damage heals from all units everywhere after combat resolves at the first location.

Sequence:

• Flurry of Blades damages units at all battlefields
• Combat resolves at Warwick's first battlefield
• After that combat ends, all damage heals from everyone everywhere
• If Warwick then moves to another battlefield, he no longer has damage from Flurry of Blades

Nuances:

• Units at other battlefields that Warwick didn't go to will heal once combat finishes at his location