"Parts of human and animal body (head, hair, teeth, saliva, blood, etc) are known to be cult objects in ancient times and were used as magical items. In primitive magic they were regarded as powerful talismans, as a double (substitute) of human being."
E. Besolova, Z. Gabunina. On the emblematic function and cultural semantics of hair. Izvestyia SOIGSI 23 (62) 2017
We are not enough, we are too timid, weak, slow. In critical circumstances we would prefer that anyone but not us would face a complex situation and solve it. This night it is possible. Through a performative action you can create your Substitute and instruct it to act in the Situation. The Substitute can act in past and future, it doesn't know human fear. When the time comes the Substitute will do everything as you say.