When Sett uses his ability to spend his buff for +4 might, does his might go from 5 to 4 to 8, creating a window where Fiora (Grand Duelist) can check if he has 4 or less might?

Ruling: Yes, Fiora's ability does trigger. When Sett spends his buff, his might decreases first (5→4), creating a game state where Fiora can check the condition, then the +4 might is applied (4→8).

Sequence:

• Sett's might goes from 5 to 4 (buff spent)
• Fiora checks and sees Sett has 4 might (condition met)
• Sett gains +4 might, going to 8