The terrorfex is a wrist-mounted grenade launcher that fires grenades made from captured Eldar wraithbone. The effect this causes is to produce nightmarish, psychically induced visions that terrify the user's enemies. The terrorfex has the following profile:
Rng: 12" S: n/a AP: n/a Assault 1 blast
Roll to hit as normal, but don't roll to wound or save. Instead, if one or more models are hit then the unit they belong to must pass a Leadership test or become pinned. Apply a -1 modifier if the unit is under half its starting strength, and -1 per model hit if the grenade hits more than one model.