User blog comment:Doctursea/Summoner Passives/@comment-4091261-20121027001633/@comment-99.229.45.199-20121027170835

Flash, ghost, heal, and exhaust are all multi-purpose summoners. They work for literally every single champ in the game- while ignite is only good for people who need kills, and CV is only good for supports, these spells benefit everybody. So if you cant fill your 2nd slot, pick one of these.