Advanced format ruling
Battle of the Elements
Card effect (current official text)Activate only while all monsters on the field are face-up. Both players send monsters they control to the Graveyard so that they each control only 1 Attribute.
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.