A version of the Groundstrike used by those with Edged or Blunt Slugfest attacks. The attacker must have a Strength at least +2CS that of the material he is standing on; he then strikes at the ground with fists, legs, etc.. setting up a shockwave that will travel up to 2 areas away in any direction. Those in the path of the Shockwave are attacked by as if by a Charge of the attacker's Strength. No damage is done by a Shockwave attack (though incidental damage may be inflicted by damaged buildings, bridges falling down, etc.) but targets may be stunned or slammed if these results are rolled.