When Fiora defends and gains shield, then Smokescreen reduces her defense, does she lose the shield and return to her base defense value?

Ruling: Yes, when Smokescreen reduces Fiora's defense below the threshold that triggered her shield, she loses the shield and returns to her base defense value (3 in this example).

Sequence:

• Fiora defends as a 4
• Call to Glory increases her to 7
• Shield check triggers, increasing her to 8
• Smokescreen reduces defense by 4 (8-4=4)
• She loses shield and returns to base defense of 3

Nuances:

• The attacker still must pay for deflect when playing Smokescreen against the shielded defender