Advanced format ruling
Sphere of Chaos
Card effect (current official text)While this card is face-up on the field its Attribute is also treated as LIGHT. Once per turn, this card cannot be destroyed by battle. When this card is Tribute Summoned, you can add 1 Level 3 monster from your Deck to your hand.
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.