Before you make a melee attack roll, you can choose to spend one use of your channel energy ability as a swift action. If you channel positive energy and you hit an undead creature, that creature takes an amount of additional damage equal to the damage dealt by your channel positive energy ability. If you channel negative energy and you hit a living creature, that creature takes an amount of additional damage equal to the damage dealt by your channel negative energy ability. Your target can make a Will save, as normal, to halve this additional damage. If your attack misses, the channel energy ability is still expended with no effect.
And then there's this
Channel Force:
When you channel energy to deal damage, you may choose to affect only a single target within 30 feet. In addition to dealing damage, if that single target fails its saving throw, you may pull or push the target up to 5 feet for every 2d6 points of channel energy damage you are capable of dealing.
My question is if you can gain the benefits of Channel force when you use Channel Smite to do damage.
To me it looks like it would work like this: you channel smite an undead (assuming you have positive channel) when you have the channel force feat, when you hit if they fail the will save they get pushed back too.
Then if that works what about improved channel force and greater channel force?
Improved Channel Force: When using Channel Force, you can affect all creatures in a 60-foot line or a 30-foot cone-shaped burst. You must choose to either push or pull all creatures within the affected area that fail their saves.[/spoiler]
Greater Channel Force: When using Improved Channel Force, you can affect all creatures in a 30-foot-radius burst.
Would the Channeled smite deal the channel damage and pushback in a cone (or line) based on the enemy you melee attack?
Would the Greater channeled smite deal the channel damage & push back in a burst around your target?
(With any of these would the selective channel feat let you pick what you hit with any of these?)