Does The Watcher's 'When you play me' effect that reduces units' might to 1 continue to apply during showdown, reducing might gained from abilities like Taric's shield during combat?

Ruling: The Watcher's 'When you play me' trigger resolves once and does not continue to apply during showdown. Might increases that happen during combat (such as from Shield abilities) are unaffected by the Watcher's earlier trigger.

Sequence:

• The Watcher's 'When you play me' effect triggers and resolves, reducing units' might to 1
• The effect is complete and does not continue looking to reduce might further
• During showdown, any might increases from abilities like Shield apply their full value without being reduced again by the Watcher