if you want to off heal you need both+plague of mending, dark renewal is an option, but sometimes inst heal from renimation make a big difference& pom heals whole pt and by lots.
as rubies for offheal u dont need - Virulence(most useless ruby atm), Blood tap r1 max 2 is enough, Shadowy reach imo r2 is enough (unless u r full heal u wont use it since is easier to heal most times), Master summoner for lurker is pointless since it oly reduces it's cast time by 15%, Blood aegis is a must have since it keeps your shields/armour up, Seal of death makes your pet hit like a truck

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Dark pact r1 max since u have phlebo.
I using this:
http://en.allodswiki.ru/calc/#!4!133...3…!avghuw/QTIMFEC
Don't forget to close aura when u heal.