The wooden puppets were the best facility the combat institutes offered to its members. It was a facility that enabled acolytes to have the perfect sparring partners to practice their techniques. The puppets would adjust their battle power to equal that of its opponent. Furthermore, when one was using the facility they would be restricted from using any kind of spells. Therefore, the acolytes had to defeat the puppet using only their techniques and skills.
The puppet would also choose the same weapon as the opponent, so it could also act as a weapon instructor, due to the fact that the puppets brought out and displayed the full essence one's weapon could have.
Lastly, the facility would also give a reward each time the acolytes managed to clear a level. The reward could be in the form of weapon skills used in battle or essence that could increase a fighter's strength.