I was playing around on the soul calculator and I was thinking of 25 Warden/31 Justicar/10 druid ..
I think it'd be successful because of all the instant heals/abilities you'd get from warden, a pet, additional mana regain component and a heal from druid annd most of the good qualities of Justicar like doctrine, reprieve, absolution ect.
Take a look at the 'abilities and passives granted' tabs, there is lots there and i think it would have potential!
I know sentinel would probably work better but they have lots of cast-time heals whereas warden doesn't, and the life-based damage attacks... but they aren't the best and have cooldowns anyway!
Idk, what do you guys think ? Any feedback is appreciated! :)