Beartrap

A beartrap is a tool object. These are usually obtained by untrapping them when primed. These can be applied on the ground to activate as a trap to clamp onto monsters unlucky enough to step on the space, rendering them immobile until they escape. Be careful, as you can get caught in beartraps as well; even ones you set down. For some reason, escaping a beartrap is 5 times more likely when moving diagonally than when moving orthogonally .