Advanced format ruling
Cloudian - Ghost Fog
Card effect (current official text)This card cannot be Special Summoned. All Battle Damage to either player from a battle involving this monster becomes 0. If this card is destroyed by battle, distribute new Fog Counters equal to the Level of the monster that destroyed it among face-up monsters.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.