Either way honestly as an off-tank, as well as support should be along these lines. Philo Stone, Heart of Gold, boots(pref Merc treads, mabe ninja tabi), maybe kage's pick. Aegis of the legion, turn philo into shurelia's reverie, turn heart of gold into iron solari or randuin's omen.
Then it is situational items. Maybe you get some ap here, but probably want to go with spirit visage, or sunfire cape or something else t get tanky. To be honest I have never gotten past the reverie, solari part of the build. win or lose.