Prevent all damage that would be dealt to creatures this turn. Creatures you control gain hexproof until end of turn. (They can't be the targets of spells or abilities your opponents control.)
Damage that would be dealt to creatures that enter the battlefield later in the turn will also be prevented. However, creatures that come under your control later in the turn wonâ€™t gain hexproof.
Blinding Fog prevents all damage that would be dealt to creatures, not just combat damage.