Advanced format ruling
Water Dragon
Card effect (current official text)Cannot be Normal Summoned/Set. Must be Special Summoned with "Bonding - H2O". The ATK of FIRE monsters and Pyro monsters on the field becomes 0. When this card is destroyed and sent to the GY: You can target 2 "Hydrogeddon" and 1 "Oxygeddon" in your GY; Special Summon them.
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.