Secret Treasure of the Toads

It's a special senjutsu-infused tag that allow the user doesn't have the time to replenish his senjutsu chakra and heal the target's wounds even if he is on the verge of death,however it can only be used once. It's a treasure that has been passed down in the Land of Toads,and it's forbidden to take it outside this land,exept for special reasons.