When Smoke Screen is used on a Student that is being attacked, and the opponent chains another Smoke Screen targeting the Student, why does the Student end up at 2 might (with its +1 trigger) instead of being reduced by the full -4 from the first Smoke Screen?

Ruling: Smoke Screen applies its -4 might reduction (to a minimum of 1) at the moment it resolves, then the effect ceases to exist. It does not create a lingering -4 modifier that continues to track the unit's might after resolution.

Sequence:

• Opponent's Smoke Screen resolves first, reducing Student from 2 might to 1 might (minimum of 1)
• Student's trigger activates, increasing might from 1 to 2
• Player's Smoke Screen resolves, reducing the Yordle's might

Nuances:

• This is due to the "Snapshot" property - once an effect resolves and is applied, it does not continue to track or influence the unit afterward
• The "to a minimum of 1" clause on Smoke Screen means it cannot reduce a unit below 1 might at the moment of resolution
• Any might changes that occur after Smoke Screen resolves are not affected by the previously resolved -4 modifier