Advanced format ruling
Natural Tune
Card effect (current official text)Select 1 face-up Level 4 or lower Normal Monster you control. It is treated as a Tuner monster while it is face-up on the field.
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.