When running with a more experienced group a healer is not always so vital – good to have, but a lot of wasted potential. This build balances between damage and healing to create a DPS Healer: Holy Dagger. This uses Imperial but many other races will work. Orc, Khajiit, Dark Elf… anything, really.
Cinder Storm cost should be 0 and gives almost 1000 stamina with Helping Hands passive. This is your stamina sustain. Replace whip with Barbed Trap for more DOT based damage, which frees more time for healing. If running Powerful Assault instead of Spell Power Cure, replace Cinder Storm with Echoing Vigor and move Cinder Storm to front bar, replacing Deadly Cloak. As a flex option you can replace the Jack of Trainee with SPC to get the extra 129 weapon and spell power, and more from light armour passives - this would make SPC a 6 piece on back bar. Deadly Cloak eats up your stamina if you parse more, so if there is need for less healing and more dps, consider replacing Deadly Cloak with some magicka ability.
You can use another dps set if you like, but I do not recommend high maintenance sets like Relequen as the stacks will drop when you heal your group.
Combo: Burning Embers → Engulfing Flames → Flames of Oblivion → Deadly Cloak → Molten Whip → heal your group