8th level domain ability

[ZanThrax]

Is there any way to get the 8th level death domain ability onto a Speaker for the Past Shaman (Restoration) 8 / Envoy of Balance 4?

Playing HP battery via Life Link is a lot more appealing if I can heal from both halves of my twinned channels.

[nicholas storm]

You can get it at level 15 with VMC cleric.