Healer Based Support

My main problem with League of Legends right now is the lack of healing supports. Soraka, Taric, Nid, Sona and Nami are basically the only ones with a heal. (Not including Janna's ult) I would like to see a champion that resembles that of a Druid on WoW. Something along the lines of having a main heal spell, a heal over time spell, a snare, and something to boost MR and Armor for a short duration. Then have an ult that summons plant like creatures to add their own healing. Support is my main role that I enjoy playing. Something that is only meant to play duo lane to heal would be a gift from the heavens. PLUS, so far, a heal over time spell on a single target does not exist at this moment (again, not talking about Janna's ult)