The executioner’s rock retractable blade reminded many of the hidden blade from the series Assassin’s creed, which was the previous project of Miscreations. This time the author used the same mechanism, but on an enlarged scale.
The live rope is attached to the lock holding the blade and is wrapped around three fingers. When Miscreations clenches a fist, the string releases the blade. According to the author, the whole process took him about two days.