Phasing - Vanilla-Expanded/VanillaExpandedFramework GitHub Wiki
HediffComp_Phasing makes the carrier of the hediff "phase" through normally solid objects
It is a comp class, so you just add it in XML in the <comps> tag of the hediff. For example, this was used in VFE - Ancients for one of the superpowers
<comps>
        <li Class="HediffCompProperties">
                <compClass>VEF.Hediffs.HediffComp_Phasing</compClass>
        </li>
</comps>