Lone Wolf

Yu-Gi-Oh Card: Lone Wolf
Available from these partners:
Lone Wolf
Type:Continuous Trap
Text:You can only activate this card if there is only 1 monster on your side of the field, and it is "Chu-Ske the Mouse Fighter", "Monk Fighter", or "Master Monk". That monster is not destroyed as a result of battle, and is unaffected by any of your opponent's monster effects.
Printings: Dark Revelations Volume 3 (DR3-EN240)
The Lost Millennium (TLM-EN060)