Thought it might be nice if we compiled a list of useless spell lines that are either useless altogether, or just underpowered.
My contribution is this:
*The shadowknight lifetap DoT line (lower level versions are also necro spells).
In their late 50s, SKs get access to the lvl29 necro spell Vampiric Curse. This DoT drains 21hp/tick over time and transfered it to the SK/necro. Most characters regenerate more health than that. Even at lvl70 Inruku's bite only transfer 175/tick which doesn't even make a dent thier health. I think both the necro and SK versions of these types of spells could use a boost.
Vampiric Curse could use a boost to about 150ish/tick and Inruku's bite should be atleast 500hp/tick.