Magdk - PvP Tank Healer

This is my third creation of a tank healer for PvP

First was a magblade. Regular heals. Healthy Offering burst heal and Dark Cloak for self heal. Great CCs. 50k health. Lots of fun
Second was mag sorc. Regular heals. Clanfear burst heal. Good CC. Streak plus negate. 50k health. Lots of fun
Just got my magdk to 50. I can use regular heals but I'm not sure if I have enough self heals with Green Blood

I like to be able to take a beating. Heal people around me and have some CC. With the DK I might be trying to fit a square peg into a round hole?

Open to suggestions.

Thanks