When a buffed Fiora (with shield active, bringing her to 6 might) is defending and the opponent casts Stupefy on her, what is her final might?

Ruling: Fiora ends up at 4 might.

Sequence:

• The layering system is always evaluated from scratch when new effects are applied
• In layer 1, base stats are applied (Fiora has 4 might)
• In layer 2, shield is checked but does not apply because Fiora's might is only 4 (not 5+)
• In layer 3, both the buff (+1) and Stupefy (-1) are applied, leaving Fiora at 4
• The layering process evaluates again from the start, but nothing changes since Fiora still has only 4 might

Nuances:

• The layering process doesn't "reset" per se, but rather is always being evaluated from scratch whenever new effects are added
• Shield and might modifications are in different layers, so dependency rules don't cause shield to be evaluated immediately after the buff