If a defending unit uses Ride the Wind to move to another battlefield and then back to the original battlefield during the same combat, does it become an attacker?

Ruling: When a unit leaves a battlefield where it was defending and moves to another battlefield with enemy units, it does not become an attacker because the combat at the new battlefield is only staged (not started) due to the ongoing combat at the original battlefield. When it returns to the original battlefield, it becomes a defender again.

Sequence:

• Unit is defending at BF1 during combat
• Unit uses Ride the Wind to move to BF2 (where enemy units are present)
• BF2 becomes contested but combat cannot start because BF1 combat is ongoing
• Unit loses defender designation but does not gain attacker designation (becomes neither)
• Unit uses Ride the Wind to return to BF1
• Unit becomes a defender again at BF1

Nuances:

• Units can be attacker, defender, or neither
• If the unit stayed at BF2 and the BF1 combat resolved, then BF2's combat would start and the unit would become an attacker
• After becoming an attacker at BF2, the unit could then Ride the Wind back to BF1 as an attacker
• Attack/Defend triggers only trigger once per unit per combat (first time gaining the designation)