Spitball Builds is a series featuring quick and dirty build concepts. Attempt at your own peril.
This entry: How to heal your friends by shooting them.
Step 1a: If the class is not proficient in the ranged weapon of your choice, gain proficiency through traits or feats
Step 2: Take the Channel Ray feat
Step 3: Use a +1 Conductive ranged weapon of your choice.
Step 4: Shoot your friend, then use the Conductive property to apply your Channel Energy heal to them.
If they get whiny about taking the weapon damage, shoot them again and forget to trigger Conductive.