Well Grounded

You may activate this ability only if there are 4 or more Earth cards in your banished zone. If the number of Earth cards in your banished zone becomes less than 4 after you’ve activated this, Well Grounded’s activated layer will still continue to resolve.

Earth cards that are face-down in your banished zone do not count towards Earth cards in your banished zone.

This is a shielding-prevention effect that prevents the next 2 damage in total that would be dealt to your hero. This can be over separate events of damage (i.e. 1 damage, then 1 damage).