Healing Spirit (PHB2, 114, Bard 4) Heals 1d8 a round, but not to a group, so its more supplementary than a replacement spell. Healing Circle (CChamp, 122, Clr 5) Lets allies spend their own damn actions on healing. But I recall most passive healing spells having once a round limits as well.
Lesser Planar Binding/Ally for an Energon (MoP) for its 4 healing touches a round?
Edit: Salve Companion Spirit (DMGII, 196) Gives a daily pool of hp healing that the party can draw from. Your combo should magnify it. Immensely.