If a unit's might is reduced to 0, is it automatically sent to the trash, or does it need to have damage marked on it?

Ruling: A card with 0 might is not automatically sent to the trash. It still needs to have damage marked on it to be sent to the trash.

Nuances:

• Removing a buff from a 1 might unit (reducing it to 0 might) does not destroy the unit by itself