Is there a way to get leech off AoE/DoT/Chaos damage?

Hey all, I'm working on a Shadow that's focused on Chaos damage through Blight and Contagion:

What I'd like to know is if there's a way to get life leech from either/both of these skills. I haven't had any success so far since neither of them "hit" enemies, so I'm wondering if anyone knows of a way around this, as I'd really love to milk some of that sweet stacking damage from Blight.

Thanks!

There's the flask Azteri's Promise, which leech's 2% of your chaos damage to life. Not sure if that works with DoTs and spells, however.

no, to both.

yes there is, atziris promise flask, 2% of chaos leeched as life during effect.

Leech only applies on hits and Contagion and Blight are not hits.

What about cherrubims maleficence with essence drain. ED should count as a hit right? Since its actually a projectile?