I'm currently playing an Undead Lord (a Cleric archetype) with the variant Undeath Channeling.
Undeath Channeling enhances the healing of channel negative energy by 50%. At level 8, the Undead Lord gain the Unlife Healer class feature, and his channel negative energy heals for an addition 50%.
Would this be calculated as:
adding 50% then 50% of the adjusted total? 4d6 +50% +50% (example: 21 + 10 (50% of 21) + 15 (50% of 31) = 46) adding 50% of the original roll twice;
or 4d6 +50% +50% (Example: 21 + 10 + 10 = 41)
I'm fairly certain it's the second one, adding 1/2 of the base roll twice, but I'm not sure. Also, with it adding (effectively) an additional 100% to the healing would it just add the full 21 for the two bonuses or would it add 10 twice?