Advanced format ruling
Debris Dragon
Card effect (current official text)When this card is Normal Summoned: You can target 1 monster with 500 or less ATK in your GY; Special Summon that target in Attack Position, but negate its effects. Cannot be used as Synchro Material, except for the Synchro Summon of a Dragon monster. The other Synchro Material(s) cannot be Level 4.
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.