Conjurer class help?

[Kitya]

Virus is useful if you fight enemies that telegraph their big hits or otherwise have a set rotation of moves they use. It's very useful in the Titan fight for reducing the damage to your tank from Mountain Buster as 10% off a 4k hit is a significant difference.

I assume that mana is a bit easier on Titan HM, then? Because on Titan Storymode I could not hold on to my mana by the last phase unless everyone avoided every thing. And that never happened.

I'm only at Hydra currently so I've not quite worked my way there.