So the questions is- when you twin channel do you get to exclude your charisma modifier once or twice? Are you considered just channeling energy once with two waves of energy? Or are you releasing channeled energy twice with one daily use and get to selective channel twice?
Twinned Channeling: When channeling energy, the envoy of balance can simultaneously release waves of positive and negative energy. She chooses a category of creatures (either living or undead), and this conjoined energy both heals and harms the affected creatures. Roll the amounts of damage healed and dealt separately. Treat the envoy of balance's effective cleric level as 2 lower than normal for the amounts of damage and the DC to halve damage taken. The envoy of balance can choose whether to include herself in either or both the healing and harming effects. If she has an ability that allows her to exclude targets from her channeled energy, such as the Selective Channelling feat, she can choose to exclude different targets from the healing effect than from the harming effect. An envoy of balance must possess the spiritual equilibrium endowment to choose this endowment.
Selective Channel
Benefit: When you channel energy, you can choose a number of targets in the area up to your Charisma modifier. These targets are not affected by your channeled energy.
