If my opponent attacks with 2 units and I have Fiora on a battlefield, can I use Flight or Fight to get Fiora's trigger?

Ruling: No, you cannot use Flight or Fight to trigger Fiora in this situation. The "one on one" condition is part of the trigger condition (before the comma), not the resolution, so it must be met at the moment the trigger would go on the initial chain.

Sequence:

• Opponent declares attack with 2 units
• Fiora checks if she can trigger ("one on one" condition not met)
• Fiora's trigger does not activate
• There is no window to activate Flight or Fight before the trigger opportunity passes

Nuances:

• The placement of "one on one" before the comma in Fiora's text means it is a condition of the trigger itself, not a condition checked at resolution