This move effect may be in need of research. Reason:Is it affected by Magic Room/Klutz, Normalize, Pixilate/Refrigerate/Aerilate/Galvanize, Ion Deluge (if the move would be Normal-type), or Electrify? You can discuss this on the talk page.
Multi-Attack inflicts damage and has no secondary effect. The type of Multi-Attack depends on the type of memory held by the user, being Normal-type if there is no held memory.