Infectious Charms is an arcane discovery that allows certain single target spells to target a second creature if the first one fails its save.
RAW, if you use it, it affects the nearest creature to the first target. From the inconsistent wording, I'm not sure that's deliberate.
"Anytime you target and successfully affect a single creature with a charm or compulsion spell and that creature is within 30 feet of another opponent, your spell has a chance of affecting the second creature as well. As a swift action immediately after affecting a creature with a charm or compulsion spell, you can cause the spell to carry over to the nearest creature within 30 feet."
Does the RAW match the RAI? Any clues or clarifications out there?