Type-Ground Blasts the foe with mud has an 30% chance of lowering attack by 1 Learned By-Sandshrew,L22,Sandslash L24,Cranidos L33,Rampardos L33,Croagunk L16,Toxicroak L16,Geodude L26,Graveler L34,Golem L42,Onix L29,Steelix L29,Barboach L36,Whiscash L43,Grimer L38,Muk 42,Numel L44,Camerupt L58