Ethereal

Ethereal (Japanese: くうきのような) is an ability created by WD for Generation C. It is the signature ability of the Misdreavus line.

In battle
A Pokémon with Ethereal is both unaffected by and is unable to learn any physical moves or any special moves that make contact.

Outside of battle
Ethereal will potentially prevent the learning and usage of physical and contact field moves, however, none of the Pokémon who may obtain the ability can normally learn any such moves presently.