Advanced format ruling
Lone Wolf
Card effect (current official text)Activate only if the 1 and only monster on your side of the field is "Chu-Ske the Mouse Fighter", "Monk Fighter", or "Master Monk". That monster cannot be destroyed as a result of battle, and is unaffected by any of your opponent's monster effects.
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.