Top parse? Topping kills in minis 25-35? This is all relevant to who you're up against and what conditions you're under.
I don't think EU or US matters here, but if you want to label my advice as less only cause Im EU then that's your call! I had my share of Mrcorp on testlive forums, so I won't bother for long if you turn out to be the same.
Static Blood synergizes very well with tos, and will increase your burst potential and healing a whole lot if you pop it at the right time. DT, Necro and Ranger (when they dot you) are some classes easily prone to this retributive damage to take some examples. Remember retributive damage is not mitigated by any invuls.
Staggering Voice (60% snare) on a caster is _nearly_ a 6 second stun with impressive range! No explaination needed.
Rousing Shock... Yes it was nerfed, but if you learn to use it not only will you benefit yourself, you will help your teammates in dire situations. Some easy AoE stuns to spot are: Ursine Crush from bs or Desecrating Essence from hox.
Not only this, but you'll save yourself from using Deliverance a whole lot.
Lightning cast can can turn the tides for your very easily when you need that extra burst. Either to pick off an enemy trying to flee, but most often I find it so sexy againsts sins. Between their immunites and dull pain, you need to make the best out of your window of opportunity. They never see it coming!
Bloodmana maybe isn't as needed always, but I find it helpful when my mana is somehow drained, and with a single spell and some AoE damage Im back to full in no time. Also you can help your DTs manapool for incredible mana sustain, meaning more damage and survival. Even when going up against several dotters depleting his manapool so fast the DT will be able to get the mana needed.
You think feating some points Wrath of the Serpent and Symbiotic Idol of Set will beat these abilities I explained about? If you can't utilize them, then maybe not. Thing is if you can the gain is massive.