Ushnack, the leader of the trolls was slightly more intelligent than the average idiot with 2 IQ that most trolls are. He decided that it would be useful if his army were able to attack from afar.
this Trebuchet is fully functioning and built to mini-figure scale. It is powered by a stone in a net and also a rubber band.
About this creation
the trebuchet actualy has a real stone in the net
the trebuchet is pulled back by a pully mechanism
this ratchet stops it swinging back up early
the trolls wind the arm down
then they load it up
a giant troll pulls the chain that releases the trebuchet from the pully roap