Titus has Green Flame Blade. I keep forgetting ha has it. I took EB just to have a ranged option, but his Cha isn’t good enough to warrant much use.
The one thing I think he needs is some Rituals. He has the Feat, after all. I know Enseth can do the same rituals, but having redundancies is good, IMO. So if I could get a few of those...
I chose his Invocations based on things that could keep him alive. Fiendish Vigor is 8 extra THP anytime he wants it, which will be always. I like to fluff THP as a healing favor like Wolverine. If someone damaged the THP but not his actual HP, then it just looks like the wound heals immediately. And it gives him a spell he can cast reliably when he can’t do anything else in combat, like if the next enemy is too far away.
Devil’s Sight is just too good to pass up as a Human without Darkvision. Should help his survivability quite a bit.